./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58639ff425b05f7497b3d6ac8d1e0a9c9e2e7663b2f2f0cb8654fd8932f07edd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:30:01,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:30:01,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:30:01,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:30:01,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:30:01,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:30:01,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:30:01,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:30:01,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:30:01,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:30:01,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:30:01,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:30:01,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:30:01,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:30:01,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:30:01,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:30:01,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:30:01,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:30:01,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:30:01,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:30:01,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:30:01,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:30:01,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:30:01,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:30:01,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:30:01,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:30:01,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:30:01,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:30:01,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:30:01,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:30:01,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:30:01,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:30:01,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:30:01,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:30:01,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:30:01,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:30:01,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:30:01,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:30:01,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:30:01,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:30:01,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:30:01,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-09 08:30:01,831 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:30:01,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:30:01,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:30:01,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:30:01,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:30:01,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:30:01,834 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:30:01,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:30:01,834 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:30:01,835 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:30:01,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:30:01,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:30:01,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:30:01,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:30:01,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:30:01,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:30:01,837 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-09 08:30:01,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:30:01,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:30:01,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:30:01,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:30:01,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:30:01,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:30:01,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:30:01,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:30:01,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:30:01,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:30:01,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:30:01,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:30:01,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:30:01,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:30:01,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:30:01,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58639ff425b05f7497b3d6ac8d1e0a9c9e2e7663b2f2f0cb8654fd8932f07edd [2021-11-09 08:30:02,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:30:02,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:30:02,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:30:02,167 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:30:02,168 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:30:02,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i [2021-11-09 08:30:02,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/data/d1ed1843f/b0a3281f8f94450ea1282cae463ec8e1/FLAGed3058f7e [2021-11-09 08:30:02,715 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:30:02,716 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i [2021-11-09 08:30:02,735 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/data/d1ed1843f/b0a3281f8f94450ea1282cae463ec8e1/FLAGed3058f7e [2021-11-09 08:30:03,101 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/data/d1ed1843f/b0a3281f8f94450ea1282cae463ec8e1 [2021-11-09 08:30:03,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:30:03,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:30:03,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:30:03,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:30:03,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:30:03,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b6744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03, skipping insertion in model container [2021-11-09 08:30:03,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:30:03,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:30:03,376 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i[873,886] [2021-11-09 08:30:03,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:30:03,392 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:30:03,405 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i[873,886] [2021-11-09 08:30:03,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:30:03,421 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:30:03,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03 WrapperNode [2021-11-09 08:30:03,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:30:03,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:30:03,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:30:03,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:30:03,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:30:03,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:30:03,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:30:03,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:30:03,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:30:03,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:30:03,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:30:03,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:30:03,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (1/1) ... [2021-11-09 08:30:03,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:30:03,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:30:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:30:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:30:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:30:03,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:30:03,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:30:03,821 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-09 08:30:03,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:03 BoogieIcfgContainer [2021-11-09 08:30:03,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:30:03,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:30:03,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:30:03,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:30:03,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:30:03" (1/3) ... [2021-11-09 08:30:03,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d14a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:03, skipping insertion in model container [2021-11-09 08:30:03,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:03" (2/3) ... [2021-11-09 08:30:03,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d14a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:03, skipping insertion in model container [2021-11-09 08:30:03,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:03" (3/3) ... [2021-11-09 08:30:03,832 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark08_conjunctive.i [2021-11-09 08:30:03,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:30:03,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-09 08:30:03,920 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:30:03,932 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:30:03,942 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-09 08:30:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:03,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-09 08:30:03,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:03,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-09 08:30:03,977 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:03,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-11-09 08:30:04,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:04,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567841805] [2021-11-09 08:30:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:04,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:04,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:04,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567841805] [2021-11-09 08:30:04,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567841805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:04,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:04,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:30:04,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257276993] [2021-11-09 08:30:04,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:04,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:04,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:04,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:04,309 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:04,376 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-11-09 08:30:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:04,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-09 08:30:04,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:04,387 INFO L225 Difference]: With dead ends: 34 [2021-11-09 08:30:04,388 INFO L226 Difference]: Without dead ends: 15 [2021-11-09 08:30:04,392 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-09 08:30:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-11-09 08:30:04,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-09 08:30:04,429 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-11-09 08:30:04,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:04,430 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-09 08:30:04,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,431 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-09 08:30:04,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-09 08:30:04,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:04,432 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-09 08:30:04,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:30:04,433 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:04,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,438 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-11-09 08:30:04,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:04,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680988366] [2021-11-09 08:30:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:04,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:04,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:04,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680988366] [2021-11-09 08:30:04,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680988366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:04,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:04,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:30:04,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247290397] [2021-11-09 08:30:04,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:04,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:04,519 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:04,541 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-09 08:30:04,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:04,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-09 08:30:04,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:04,543 INFO L225 Difference]: With dead ends: 16 [2021-11-09 08:30:04,543 INFO L226 Difference]: Without dead ends: 15 [2021-11-09 08:30:04,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-09 08:30:04,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-09 08:30:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-09 08:30:04,556 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2021-11-09 08:30:04,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:04,556 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-09 08:30:04,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,557 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-09 08:30:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:30:04,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:04,558 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:04,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:30:04,558 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-11-09 08:30:04,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:04,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637783662] [2021-11-09 08:30:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:04,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:04,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:04,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637783662] [2021-11-09 08:30:04,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637783662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:04,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:04,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:04,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125099758] [2021-11-09 08:30:04,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:04,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:04,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:04,650 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:04,690 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-11-09 08:30:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:04,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-09 08:30:04,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:04,694 INFO L225 Difference]: With dead ends: 19 [2021-11-09 08:30:04,694 INFO L226 Difference]: Without dead ends: 17 [2021-11-09 08:30:04,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:04,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-09 08:30:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-09 08:30:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-09 08:30:04,703 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2021-11-09 08:30:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:04,703 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-09 08:30:04,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-09 08:30:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 08:30:04,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:04,705 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:04,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:30:04,706 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:04,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,707 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-11-09 08:30:04,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:04,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603852712] [2021-11-09 08:30:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:04,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:04,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:04,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603852712] [2021-11-09 08:30:04,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603852712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:04,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185819179] [2021-11-09 08:30:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:04,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:04,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:04,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:04,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 08:30:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:30:04,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:05,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185819179] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:05,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:05,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-09 08:30:05,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252207016] [2021-11-09 08:30:05,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:30:05,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:05,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:30:05,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:30:05,146 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:05,223 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-11-09 08:30:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:30:05,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 08:30:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:05,224 INFO L225 Difference]: With dead ends: 22 [2021-11-09 08:30:05,224 INFO L226 Difference]: Without dead ends: 21 [2021-11-09 08:30:05,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:30:05,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-09 08:30:05,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-09 08:30:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-09 08:30:05,229 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2021-11-09 08:30:05,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:05,229 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-09 08:30:05,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,230 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-09 08:30:05,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 08:30:05,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:05,231 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:05,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:05,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:05,451 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:05,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1472766433, now seen corresponding path program 1 times [2021-11-09 08:30:05,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:05,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778479594] [2021-11-09 08:30:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:05,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:05,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:05,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778479594] [2021-11-09 08:30:05,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778479594] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:05,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279830305] [2021-11-09 08:30:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:05,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:05,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:05,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:05,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 08:30:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:05,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279830305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:05,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:30:05,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-11-09 08:30:05,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433182333] [2021-11-09 08:30:05,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:30:05,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:05,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:30:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:30:05,666 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:05,708 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-11-09 08:30:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:30:05,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-09 08:30:05,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:05,710 INFO L225 Difference]: With dead ends: 19 [2021-11-09 08:30:05,710 INFO L226 Difference]: Without dead ends: 17 [2021-11-09 08:30:05,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:30:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-09 08:30:05,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-09 08:30:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-09 08:30:05,714 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2021-11-09 08:30:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:05,714 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-09 08:30:05,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-09 08:30:05,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:30:05,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:05,715 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:05,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:05,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:05,935 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:05,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:05,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2021-11-09 08:30:05,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:05,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743331449] [2021-11-09 08:30:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:05,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:06,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:06,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743331449] [2021-11-09 08:30:06,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743331449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:06,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691892969] [2021-11-09 08:30:06,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:06,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:06,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:06,043 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:06,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 08:30:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:30:06,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:06,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691892969] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:06,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:06,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-09 08:30:06,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919217581] [2021-11-09 08:30:06,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:30:06,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:30:06,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:30:06,188 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:06,243 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-09 08:30:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:30:06,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-09 08:30:06,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:06,246 INFO L225 Difference]: With dead ends: 21 [2021-11-09 08:30:06,246 INFO L226 Difference]: Without dead ends: 20 [2021-11-09 08:30:06,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:30:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-09 08:30:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-11-09 08:30:06,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-09 08:30:06,257 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2021-11-09 08:30:06,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:06,257 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-09 08:30:06,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,257 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-09 08:30:06,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 08:30:06,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:06,259 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-09 08:30:06,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:06,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:06,478 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:06,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:06,479 INFO L85 PathProgramCache]: Analyzing trace with hash 487275813, now seen corresponding path program 2 times [2021-11-09 08:30:06,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:06,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284996869] [2021-11-09 08:30:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:06,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:06,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:06,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284996869] [2021-11-09 08:30:06,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284996869] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:06,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902490826] [2021-11-09 08:30:06,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:30:06,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:06,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:06,595 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:06,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 08:30:06,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:30:06,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:06,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 08:30:06,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:06,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902490826] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:06,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:06,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-11-09 08:30:06,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196250788] [2021-11-09 08:30:06,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 08:30:06,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:06,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 08:30:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:30:06,898 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:07,065 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-11-09 08:30:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:30:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-09 08:30:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:07,066 INFO L225 Difference]: With dead ends: 24 [2021-11-09 08:30:07,067 INFO L226 Difference]: Without dead ends: 23 [2021-11-09 08:30:07,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:30:07,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-09 08:30:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-09 08:30:07,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-11-09 08:30:07,083 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2021-11-09 08:30:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:07,084 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-11-09 08:30:07,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-11-09 08:30:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 08:30:07,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:07,085 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-11-09 08:30:07,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:07,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:07,311 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:07,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash 120622631, now seen corresponding path program 2 times [2021-11-09 08:30:07,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:07,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493399805] [2021-11-09 08:30:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:07,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:07,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:07,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493399805] [2021-11-09 08:30:07,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493399805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:07,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125248710] [2021-11-09 08:30:07,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:30:07,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:07,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:07,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:07,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 08:30:07,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 08:30:07,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:07,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:30:07,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-09 08:30:07,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125248710] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:07,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:07,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2021-11-09 08:30:07,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019946935] [2021-11-09 08:30:07,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:30:07,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:07,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:30:07,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:30:07,532 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:07,659 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-11-09 08:30:07,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:30:07,661 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-09 08:30:07,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:07,663 INFO L225 Difference]: With dead ends: 26 [2021-11-09 08:30:07,663 INFO L226 Difference]: Without dead ends: 25 [2021-11-09 08:30:07,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-09 08:30:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-09 08:30:07,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2021-11-09 08:30:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-11-09 08:30:07,673 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2021-11-09 08:30:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:07,673 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-11-09 08:30:07,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-11-09 08:30:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-09 08:30:07,674 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:07,674 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2021-11-09 08:30:07,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:07,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-09 08:30:07,896 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:07,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:07,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1418773263, now seen corresponding path program 3 times [2021-11-09 08:30:07,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:07,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904948588] [2021-11-09 08:30:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:07,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:08,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:08,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904948588] [2021-11-09 08:30:08,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904948588] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:08,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070977044] [2021-11-09 08:30:08,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:30:08,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:08,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:08,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:08,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 08:30:08,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 08:30:08,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:08,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 08:30:08,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:08,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070977044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:08,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:08,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-09 08:30:08,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010593122] [2021-11-09 08:30:08,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 08:30:08,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:08,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 08:30:08,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:30:08,336 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:08,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:08,432 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-11-09 08:30:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:30:08,432 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-09 08:30:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:08,433 INFO L225 Difference]: With dead ends: 28 [2021-11-09 08:30:08,434 INFO L226 Difference]: Without dead ends: 27 [2021-11-09 08:30:08,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-09 08:30:08,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-09 08:30:08,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-11-09 08:30:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-11-09 08:30:08,445 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2021-11-09 08:30:08,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:08,446 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-11-09 08:30:08,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-11-09 08:30:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-09 08:30:08,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:08,448 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-11-09 08:30:08,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-09 08:30:08,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:08,663 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:08,663 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 4 times [2021-11-09 08:30:08,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:08,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167130272] [2021-11-09 08:30:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:08,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:08,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:08,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167130272] [2021-11-09 08:30:08,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167130272] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:08,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755153988] [2021-11-09 08:30:08,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:30:08,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:08,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:08,777 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:08,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 08:30:08,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:30:08,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:08,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 08:30:08,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:09,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755153988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:09,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:09,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-09 08:30:09,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415549165] [2021-11-09 08:30:09,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 08:30:09,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:09,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 08:30:09,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:30:09,206 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:09,317 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-11-09 08:30:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:30:09,318 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-09 08:30:09,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:09,319 INFO L225 Difference]: With dead ends: 33 [2021-11-09 08:30:09,319 INFO L226 Difference]: Without dead ends: 32 [2021-11-09 08:30:09,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2021-11-09 08:30:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-09 08:30:09,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-11-09 08:30:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:09,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-11-09 08:30:09,328 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2021-11-09 08:30:09,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:09,330 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-11-09 08:30:09,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-11-09 08:30:09,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-09 08:30:09,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:09,331 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1] [2021-11-09 08:30:09,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:09,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 08:30:09,555 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:09,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:09,555 INFO L85 PathProgramCache]: Analyzing trace with hash -977343119, now seen corresponding path program 5 times [2021-11-09 08:30:09,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:09,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226771438] [2021-11-09 08:30:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:09,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:09,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:09,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226771438] [2021-11-09 08:30:09,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226771438] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:09,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025658443] [2021-11-09 08:30:09,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:30:09,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:09,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:09,700 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:09,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 08:30:09,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-09 08:30:09,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:09,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 08:30:09,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:10,167 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:10,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025658443] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:10,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:10,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-11-09 08:30:10,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106004194] [2021-11-09 08:30:10,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 08:30:10,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:10,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 08:30:10,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2021-11-09 08:30:10,170 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 24 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:10,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:10,314 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-11-09 08:30:10,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:30:10,315 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-09 08:30:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:10,316 INFO L225 Difference]: With dead ends: 38 [2021-11-09 08:30:10,316 INFO L226 Difference]: Without dead ends: 37 [2021-11-09 08:30:10,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-11-09 08:30:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-09 08:30:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-11-09 08:30:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:10,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-11-09 08:30:10,320 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2021-11-09 08:30:10,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:10,320 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-11-09 08:30:10,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-11-09 08:30:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-09 08:30:10,322 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:10,322 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1] [2021-11-09 08:30:10,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:10,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-09 08:30:10,523 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1362746405, now seen corresponding path program 6 times [2021-11-09 08:30:10,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:10,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296007286] [2021-11-09 08:30:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:10,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:10,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:10,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296007286] [2021-11-09 08:30:10,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296007286] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:10,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290016567] [2021-11-09 08:30:10,709 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:30:10,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:10,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:10,710 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:10,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 08:30:10,846 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-09 08:30:10,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:10,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-09 08:30:10,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:11,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290016567] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:11,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:11,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-09 08:30:11,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827373420] [2021-11-09 08:30:11,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 08:30:11,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:11,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 08:30:11,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2021-11-09 08:30:11,337 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:11,507 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-11-09 08:30:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:30:11,507 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-09 08:30:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:11,508 INFO L225 Difference]: With dead ends: 43 [2021-11-09 08:30:11,508 INFO L226 Difference]: Without dead ends: 42 [2021-11-09 08:30:11,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 08:30:11,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-09 08:30:11,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-11-09 08:30:11,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-11-09 08:30:11,514 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2021-11-09 08:30:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:11,515 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-11-09 08:30:11,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:11,515 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-11-09 08:30:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-09 08:30:11,516 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:11,517 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1] [2021-11-09 08:30:11,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-09 08:30:11,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:11,731 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:11,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:11,731 INFO L85 PathProgramCache]: Analyzing trace with hash 915144177, now seen corresponding path program 7 times [2021-11-09 08:30:11,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:11,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908970370] [2021-11-09 08:30:11,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:11,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:11,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:11,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908970370] [2021-11-09 08:30:11,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908970370] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:11,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060268476] [2021-11-09 08:30:11,913 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:30:11,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:11,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:11,913 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:11,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 08:30:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:12,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-09 08:30:12,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:12,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060268476] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:12,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:12,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2021-11-09 08:30:12,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344445668] [2021-11-09 08:30:12,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-09 08:30:12,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:12,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-09 08:30:12,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2021-11-09 08:30:12,592 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:12,783 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-11-09 08:30:12,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 08:30:12,784 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-09 08:30:12,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:12,785 INFO L225 Difference]: With dead ends: 48 [2021-11-09 08:30:12,785 INFO L226 Difference]: Without dead ends: 47 [2021-11-09 08:30:12,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=1133, Unknown=0, NotChecked=0, Total=1482 [2021-11-09 08:30:12,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-09 08:30:12,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-11-09 08:30:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-11-09 08:30:12,791 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 40 [2021-11-09 08:30:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:12,791 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-11-09 08:30:12,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:12,792 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-11-09 08:30:12,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-09 08:30:12,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:12,793 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1] [2021-11-09 08:30:12,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:12,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-09 08:30:12,994 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:12,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2138891355, now seen corresponding path program 8 times [2021-11-09 08:30:12,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:12,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971894481] [2021-11-09 08:30:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:12,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:13,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:13,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971894481] [2021-11-09 08:30:13,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971894481] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:13,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113224911] [2021-11-09 08:30:13,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:30:13,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:13,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:13,225 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:13,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 08:30:13,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:30:13,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:13,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-09 08:30:13,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:14,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113224911] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:14,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:14,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2021-11-09 08:30:14,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550409968] [2021-11-09 08:30:14,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-09 08:30:14,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:14,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-09 08:30:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1016, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 08:30:14,065 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:14,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:14,334 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-11-09 08:30:14,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 08:30:14,335 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-09 08:30:14,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:14,336 INFO L225 Difference]: With dead ends: 53 [2021-11-09 08:30:14,336 INFO L226 Difference]: Without dead ends: 52 [2021-11-09 08:30:14,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=434, Invalid=1458, Unknown=0, NotChecked=0, Total=1892 [2021-11-09 08:30:14,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-09 08:30:14,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-11-09 08:30:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-11-09 08:30:14,343 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 45 [2021-11-09 08:30:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:14,343 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-11-09 08:30:14,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:14,344 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-11-09 08:30:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 08:30:14,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:14,345 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1] [2021-11-09 08:30:14,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:14,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:14,546 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:14,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:14,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2002882959, now seen corresponding path program 9 times [2021-11-09 08:30:14,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:14,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245390712] [2021-11-09 08:30:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:14,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:14,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:14,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245390712] [2021-11-09 08:30:14,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245390712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:14,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593404627] [2021-11-09 08:30:14,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:30:14,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:14,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:14,820 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:14,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 08:30:15,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-09 08:30:15,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:15,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-09 08:30:15,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:15,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593404627] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:15,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:15,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2021-11-09 08:30:15,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417462633] [2021-11-09 08:30:15,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-09 08:30:15,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:15,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-09 08:30:15,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2021-11-09 08:30:15,730 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 40 states, 39 states have (on average 2.5128205128205128) internal successors, (98), 40 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:15,969 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-11-09 08:30:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 08:30:15,970 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.5128205128205128) internal successors, (98), 40 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-09 08:30:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:15,971 INFO L225 Difference]: With dead ends: 58 [2021-11-09 08:30:15,971 INFO L226 Difference]: Without dead ends: 57 [2021-11-09 08:30:15,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=1824, Unknown=0, NotChecked=0, Total=2352 [2021-11-09 08:30:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-09 08:30:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-11-09 08:30:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-11-09 08:30:15,977 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 50 [2021-11-09 08:30:15,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:15,977 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-11-09 08:30:15,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.5128205128205128) internal successors, (98), 40 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-11-09 08:30:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-09 08:30:15,978 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:15,979 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-11-09 08:30:16,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:16,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-09 08:30:16,179 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:16,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 10 times [2021-11-09 08:30:16,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:16,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308958616] [2021-11-09 08:30:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:16,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:16,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:16,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308958616] [2021-11-09 08:30:16,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308958616] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:16,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508636342] [2021-11-09 08:30:16,453 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:30:16,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:16,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:16,455 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:16,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 08:30:16,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:30:16,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:16,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 08:30:16,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:17,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508636342] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:17,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:17,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2021-11-09 08:30:17,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053877826] [2021-11-09 08:30:17,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-09 08:30:17,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:17,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-09 08:30:17,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1548, Unknown=0, NotChecked=0, Total=1892 [2021-11-09 08:30:17,423 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 44 states, 43 states have (on average 2.511627906976744) internal successors, (108), 44 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:17,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:17,690 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2021-11-09 08:30:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 08:30:17,690 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.511627906976744) internal successors, (108), 44 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-09 08:30:17,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:17,691 INFO L225 Difference]: With dead ends: 63 [2021-11-09 08:30:17,691 INFO L226 Difference]: Without dead ends: 62 [2021-11-09 08:30:17,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=631, Invalid=2231, Unknown=0, NotChecked=0, Total=2862 [2021-11-09 08:30:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-09 08:30:17,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2021-11-09 08:30:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2021-11-09 08:30:17,697 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 55 [2021-11-09 08:30:17,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:17,698 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2021-11-09 08:30:17,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.511627906976744) internal successors, (108), 44 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2021-11-09 08:30:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 08:30:17,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:17,699 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1] [2021-11-09 08:30:17,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:17,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-09 08:30:17,906 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:17,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:17,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1824407281, now seen corresponding path program 11 times [2021-11-09 08:30:17,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:17,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398179693] [2021-11-09 08:30:17,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:17,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:18,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:18,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398179693] [2021-11-09 08:30:18,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398179693] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:18,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754637028] [2021-11-09 08:30:18,253 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:30:18,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:18,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:18,255 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:18,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 08:30:18,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-09 08:30:18,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:18,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-09 08:30:18,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:19,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754637028] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:19,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:19,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2021-11-09 08:30:19,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387491605] [2021-11-09 08:30:19,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-09 08:30:19,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:19,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-09 08:30:19,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=1856, Unknown=0, NotChecked=0, Total=2256 [2021-11-09 08:30:19,433 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 48 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 48 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:19,706 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-11-09 08:30:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 08:30:19,706 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 48 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-09 08:30:19,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:19,707 INFO L225 Difference]: With dead ends: 68 [2021-11-09 08:30:19,707 INFO L226 Difference]: Without dead ends: 67 [2021-11-09 08:30:19,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=2679, Unknown=0, NotChecked=0, Total=3422 [2021-11-09 08:30:19,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-09 08:30:19,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-11-09 08:30:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2021-11-09 08:30:19,731 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 60 [2021-11-09 08:30:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:19,731 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2021-11-09 08:30:19,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 48 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2021-11-09 08:30:19,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 08:30:19,734 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:19,734 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1] [2021-11-09 08:30:19,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:19,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-09 08:30:19,935 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1150384805, now seen corresponding path program 12 times [2021-11-09 08:30:19,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:19,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288555756] [2021-11-09 08:30:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:19,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:20,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:20,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288555756] [2021-11-09 08:30:20,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288555756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:20,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064347823] [2021-11-09 08:30:20,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:30:20,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:20,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:20,268 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:20,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 08:30:20,565 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-09 08:30:20,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:20,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-09 08:30:20,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:21,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064347823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:21,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:21,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2021-11-09 08:30:21,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818782945] [2021-11-09 08:30:21,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-09 08:30:21,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:21,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-09 08:30:21,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=2192, Unknown=0, NotChecked=0, Total=2652 [2021-11-09 08:30:21,580 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 52 states, 51 states have (on average 2.5098039215686274) internal successors, (128), 52 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:21,917 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-11-09 08:30:21,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 08:30:21,918 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.5098039215686274) internal successors, (128), 52 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-09 08:30:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:21,918 INFO L225 Difference]: With dead ends: 73 [2021-11-09 08:30:21,919 INFO L226 Difference]: Without dead ends: 72 [2021-11-09 08:30:21,920 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=864, Invalid=3168, Unknown=0, NotChecked=0, Total=4032 [2021-11-09 08:30:21,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-09 08:30:21,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-11-09 08:30:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 70 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-11-09 08:30:21,925 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 65 [2021-11-09 08:30:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:21,925 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-11-09 08:30:21,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.5098039215686274) internal successors, (128), 52 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-11-09 08:30:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 08:30:21,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:21,927 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1] [2021-11-09 08:30:21,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:22,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 08:30:22,139 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:22,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:22,139 INFO L85 PathProgramCache]: Analyzing trace with hash 968060785, now seen corresponding path program 13 times [2021-11-09 08:30:22,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:22,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210511565] [2021-11-09 08:30:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:22,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:22,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:22,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210511565] [2021-11-09 08:30:22,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210511565] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:22,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801389162] [2021-11-09 08:30:22,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:30:22,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:22,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:22,553 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:22,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-09 08:30:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:22,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-09 08:30:22,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:24,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801389162] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:24,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:24,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2021-11-09 08:30:24,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455169830] [2021-11-09 08:30:24,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-09 08:30:24,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:24,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-09 08:30:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=2556, Unknown=0, NotChecked=0, Total=3080 [2021-11-09 08:30:24,045 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 56 states, 55 states have (on average 2.5090909090909093) internal successors, (138), 56 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:24,431 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2021-11-09 08:30:24,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-09 08:30:24,432 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.5090909090909093) internal successors, (138), 56 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-09 08:30:24,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:24,433 INFO L225 Difference]: With dead ends: 78 [2021-11-09 08:30:24,433 INFO L226 Difference]: Without dead ends: 77 [2021-11-09 08:30:24,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=994, Invalid=3698, Unknown=0, NotChecked=0, Total=4692 [2021-11-09 08:30:24,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-09 08:30:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-11-09 08:30:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2021-11-09 08:30:24,439 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 70 [2021-11-09 08:30:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:24,439 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2021-11-09 08:30:24,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.5090909090909093) internal successors, (138), 56 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2021-11-09 08:30:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 08:30:24,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:24,441 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1] [2021-11-09 08:30:24,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:24,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:24,659 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:24,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:24,659 INFO L85 PathProgramCache]: Analyzing trace with hash 197564965, now seen corresponding path program 14 times [2021-11-09 08:30:24,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:24,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461808741] [2021-11-09 08:30:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:24,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:25,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:25,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461808741] [2021-11-09 08:30:25,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461808741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:25,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420897586] [2021-11-09 08:30:25,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:30:25,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:25,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:25,094 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:25,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-09 08:30:25,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:30:25,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:25,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-09 08:30:25,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:26,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420897586] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:26,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:26,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2021-11-09 08:30:26,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56684947] [2021-11-09 08:30:26,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-09 08:30:26,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:26,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-09 08:30:26,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=2948, Unknown=0, NotChecked=0, Total=3540 [2021-11-09 08:30:26,549 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 60 states, 59 states have (on average 2.5084745762711864) internal successors, (148), 60 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:26,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:26,946 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-11-09 08:30:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 08:30:26,946 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.5084745762711864) internal successors, (148), 60 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-09 08:30:26,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:26,947 INFO L225 Difference]: With dead ends: 83 [2021-11-09 08:30:26,947 INFO L226 Difference]: Without dead ends: 82 [2021-11-09 08:30:26,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1133, Invalid=4269, Unknown=0, NotChecked=0, Total=5402 [2021-11-09 08:30:26,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-09 08:30:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2021-11-09 08:30:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2021-11-09 08:30:26,957 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 75 [2021-11-09 08:30:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:26,957 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2021-11-09 08:30:26,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.5084745762711864) internal successors, (148), 60 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2021-11-09 08:30:26,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-09 08:30:26,959 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:26,959 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1] [2021-11-09 08:30:26,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-09 08:30:27,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:27,167 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:27,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1816526833, now seen corresponding path program 15 times [2021-11-09 08:30:27,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:27,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010933316] [2021-11-09 08:30:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:27,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:27,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:27,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010933316] [2021-11-09 08:30:27,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010933316] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:27,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545031117] [2021-11-09 08:30:27,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:30:27,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:27,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:27,640 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:27,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-09 08:30:28,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-09 08:30:28,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:28,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-09 08:30:28,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:29,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545031117] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:29,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:29,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2021-11-09 08:30:29,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154086841] [2021-11-09 08:30:29,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-09 08:30:29,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-09 08:30:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=664, Invalid=3368, Unknown=0, NotChecked=0, Total=4032 [2021-11-09 08:30:29,325 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand has 64 states, 63 states have (on average 2.507936507936508) internal successors, (158), 64 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:29,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:29,744 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-11-09 08:30:29,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-09 08:30:29,745 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.507936507936508) internal successors, (158), 64 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-09 08:30:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:29,745 INFO L225 Difference]: With dead ends: 88 [2021-11-09 08:30:29,746 INFO L226 Difference]: Without dead ends: 87 [2021-11-09 08:30:29,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1281, Invalid=4881, Unknown=0, NotChecked=0, Total=6162 [2021-11-09 08:30:29,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-09 08:30:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-11-09 08:30:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2021-11-09 08:30:29,755 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 80 [2021-11-09 08:30:29,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:29,756 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2021-11-09 08:30:29,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.507936507936508) internal successors, (158), 64 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:29,756 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2021-11-09 08:30:29,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-09 08:30:29,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:29,757 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1] [2021-11-09 08:30:29,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:29,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:29,983 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:29,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:29,983 INFO L85 PathProgramCache]: Analyzing trace with hash 951736741, now seen corresponding path program 16 times [2021-11-09 08:30:29,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:29,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572736013] [2021-11-09 08:30:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:29,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:30,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:30,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572736013] [2021-11-09 08:30:30,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572736013] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:30,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252364541] [2021-11-09 08:30:30,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:30:30,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:30,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:30,563 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:30,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-09 08:30:31,003 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:30:31,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:31,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-09 08:30:31,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:32,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252364541] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:32,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:32,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2021-11-09 08:30:32,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202333832] [2021-11-09 08:30:32,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-09 08:30:32,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:32,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-09 08:30:32,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=3816, Unknown=0, NotChecked=0, Total=4556 [2021-11-09 08:30:32,382 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 68 states, 67 states have (on average 2.5074626865671643) internal successors, (168), 68 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:32,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:32,824 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2021-11-09 08:30:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-09 08:30:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.5074626865671643) internal successors, (168), 68 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-09 08:30:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:32,825 INFO L225 Difference]: With dead ends: 93 [2021-11-09 08:30:32,825 INFO L226 Difference]: Without dead ends: 92 [2021-11-09 08:30:32,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1923 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1438, Invalid=5534, Unknown=0, NotChecked=0, Total=6972 [2021-11-09 08:30:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-09 08:30:32,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2021-11-09 08:30:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.011111111111111) internal successors, (91), 90 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:32,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2021-11-09 08:30:32,829 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 85 [2021-11-09 08:30:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:32,829 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2021-11-09 08:30:32,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.5074626865671643) internal successors, (168), 68 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:32,829 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2021-11-09 08:30:32,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-09 08:30:32,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:32,830 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1] [2021-11-09 08:30:32,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:33,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:33,047 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:33,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash 658370673, now seen corresponding path program 17 times [2021-11-09 08:30:33,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:33,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605827377] [2021-11-09 08:30:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:33,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:33,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:33,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605827377] [2021-11-09 08:30:33,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605827377] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:33,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731864218] [2021-11-09 08:30:33,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:30:33,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:33,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:33,626 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:33,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-09 08:30:34,148 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-09 08:30:34,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:34,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 08:30:34,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:35,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731864218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:35,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:35,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2021-11-09 08:30:35,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583097745] [2021-11-09 08:30:35,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-11-09 08:30:35,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:35,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-11-09 08:30:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=4292, Unknown=0, NotChecked=0, Total=5112 [2021-11-09 08:30:35,549 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand has 72 states, 71 states have (on average 2.507042253521127) internal successors, (178), 72 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:36,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:36,048 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2021-11-09 08:30:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-09 08:30:36,048 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.507042253521127) internal successors, (178), 72 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-09 08:30:36,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:36,049 INFO L225 Difference]: With dead ends: 98 [2021-11-09 08:30:36,049 INFO L226 Difference]: Without dead ends: 97 [2021-11-09 08:30:36,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2171 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1604, Invalid=6228, Unknown=0, NotChecked=0, Total=7832 [2021-11-09 08:30:36,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-09 08:30:36,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-11-09 08:30:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-11-09 08:30:36,054 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 90 [2021-11-09 08:30:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:36,054 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-11-09 08:30:36,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.507042253521127) internal successors, (178), 72 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-11-09 08:30:36,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-09 08:30:36,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:36,055 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1] [2021-11-09 08:30:36,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:36,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-09 08:30:36,256 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:36,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:36,256 INFO L85 PathProgramCache]: Analyzing trace with hash 631552293, now seen corresponding path program 18 times [2021-11-09 08:30:36,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:36,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911558244] [2021-11-09 08:30:36,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:36,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:36,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:36,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911558244] [2021-11-09 08:30:36,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911558244] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:36,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366346195] [2021-11-09 08:30:36,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:30:36,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:36,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:36,885 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:36,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-09 08:30:37,459 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-09 08:30:37,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:37,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-09 08:30:37,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:39,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366346195] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:39,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:39,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2021-11-09 08:30:39,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929069235] [2021-11-09 08:30:39,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-09 08:30:39,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:39,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-09 08:30:39,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=904, Invalid=4796, Unknown=0, NotChecked=0, Total=5700 [2021-11-09 08:30:39,019 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand has 76 states, 75 states have (on average 2.506666666666667) internal successors, (188), 76 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:39,604 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2021-11-09 08:30:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-09 08:30:39,605 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.506666666666667) internal successors, (188), 76 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-09 08:30:39,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:39,606 INFO L225 Difference]: With dead ends: 103 [2021-11-09 08:30:39,606 INFO L226 Difference]: Without dead ends: 102 [2021-11-09 08:30:39,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2434 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1779, Invalid=6963, Unknown=0, NotChecked=0, Total=8742 [2021-11-09 08:30:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-09 08:30:39,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-11-09 08:30:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.01) internal successors, (101), 100 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2021-11-09 08:30:39,612 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 95 [2021-11-09 08:30:39,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:39,612 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2021-11-09 08:30:39,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.506666666666667) internal successors, (188), 76 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2021-11-09 08:30:39,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 08:30:39,615 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:39,616 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1] [2021-11-09 08:30:39,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:39,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:39,817 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:39,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:39,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1285340943, now seen corresponding path program 19 times [2021-11-09 08:30:39,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:39,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537178579] [2021-11-09 08:30:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:39,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:40,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:40,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537178579] [2021-11-09 08:30:40,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537178579] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:40,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890863362] [2021-11-09 08:30:40,592 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:30:40,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:40,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:40,594 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:40,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-09 08:30:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:41,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-09 08:30:41,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:42,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890863362] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:42,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:42,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2021-11-09 08:30:42,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426232258] [2021-11-09 08:30:42,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-11-09 08:30:42,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:42,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-11-09 08:30:42,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=5328, Unknown=0, NotChecked=0, Total=6320 [2021-11-09 08:30:42,902 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand has 80 states, 79 states have (on average 2.5063291139240507) internal successors, (198), 80 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:43,445 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2021-11-09 08:30:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-09 08:30:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.5063291139240507) internal successors, (198), 80 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-09 08:30:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:43,446 INFO L225 Difference]: With dead ends: 108 [2021-11-09 08:30:43,446 INFO L226 Difference]: Without dead ends: 107 [2021-11-09 08:30:43,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2712 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1963, Invalid=7739, Unknown=0, NotChecked=0, Total=9702 [2021-11-09 08:30:43,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-09 08:30:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2021-11-09 08:30:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0095238095238095) internal successors, (106), 105 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2021-11-09 08:30:43,452 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 100 [2021-11-09 08:30:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:43,453 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2021-11-09 08:30:43,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.5063291139240507) internal successors, (198), 80 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:43,453 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2021-11-09 08:30:43,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-09 08:30:43,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:43,454 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1] [2021-11-09 08:30:43,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-11-09 08:30:43,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-09 08:30:43,679 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:43,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash -960644955, now seen corresponding path program 20 times [2021-11-09 08:30:43,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:43,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439305107] [2021-11-09 08:30:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:43,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:44,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:44,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439305107] [2021-11-09 08:30:44,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439305107] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:44,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788461990] [2021-11-09 08:30:44,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:30:44,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:44,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:44,438 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:44,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-09 08:30:45,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:30:45,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:45,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-09 08:30:45,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:46,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788461990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:46,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:46,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2021-11-09 08:30:46,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106393419] [2021-11-09 08:30:46,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-11-09 08:30:46,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-11-09 08:30:46,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1084, Invalid=5888, Unknown=0, NotChecked=0, Total=6972 [2021-11-09 08:30:46,970 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand has 84 states, 83 states have (on average 2.5060240963855422) internal successors, (208), 84 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:47,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:47,525 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2021-11-09 08:30:47,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-09 08:30:47,526 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.5060240963855422) internal successors, (208), 84 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-09 08:30:47,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:47,527 INFO L225 Difference]: With dead ends: 113 [2021-11-09 08:30:47,527 INFO L226 Difference]: Without dead ends: 112 [2021-11-09 08:30:47,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3005 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2156, Invalid=8556, Unknown=0, NotChecked=0, Total=10712 [2021-11-09 08:30:47,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-09 08:30:47,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2021-11-09 08:30:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.009090909090909) internal successors, (111), 110 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2021-11-09 08:30:47,532 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 105 [2021-11-09 08:30:47,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:47,532 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2021-11-09 08:30:47,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.5060240963855422) internal successors, (208), 84 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2021-11-09 08:30:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-09 08:30:47,533 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:47,534 INFO L513 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1] [2021-11-09 08:30:47,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:47,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-09 08:30:47,739 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:47,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:47,739 INFO L85 PathProgramCache]: Analyzing trace with hash -8523407, now seen corresponding path program 21 times [2021-11-09 08:30:47,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:47,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138000277] [2021-11-09 08:30:47,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:47,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:48,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:48,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138000277] [2021-11-09 08:30:48,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138000277] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:48,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382119937] [2021-11-09 08:30:48,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:30:48,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:48,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:48,522 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:48,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-09 08:30:49,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-09 08:30:49,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:49,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-09 08:30:49,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:51,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:51,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382119937] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:51,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:51,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2021-11-09 08:30:51,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916748223] [2021-11-09 08:30:51,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-11-09 08:30:51,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:51,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-11-09 08:30:51,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=6476, Unknown=0, NotChecked=0, Total=7656 [2021-11-09 08:30:51,196 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand has 88 states, 87 states have (on average 2.5057471264367814) internal successors, (218), 88 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:51,968 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2021-11-09 08:30:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-09 08:30:51,971 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.5057471264367814) internal successors, (218), 88 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-09 08:30:51,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:51,972 INFO L225 Difference]: With dead ends: 118 [2021-11-09 08:30:51,972 INFO L226 Difference]: Without dead ends: 117 [2021-11-09 08:30:51,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3313 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2358, Invalid=9414, Unknown=0, NotChecked=0, Total=11772 [2021-11-09 08:30:51,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-09 08:30:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-11-09 08:30:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.008695652173913) internal successors, (116), 115 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2021-11-09 08:30:51,978 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 110 [2021-11-09 08:30:51,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:51,979 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2021-11-09 08:30:51,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.5057471264367814) internal successors, (218), 88 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2021-11-09 08:30:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-09 08:30:51,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:51,981 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-11-09 08:30:52,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:52,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-09 08:30:52,199 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:52,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:52,200 INFO L85 PathProgramCache]: Analyzing trace with hash 708663333, now seen corresponding path program 22 times [2021-11-09 08:30:52,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:52,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304096490] [2021-11-09 08:30:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:52,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:53,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:53,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304096490] [2021-11-09 08:30:53,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304096490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:53,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938924213] [2021-11-09 08:30:53,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:30:53,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:53,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:53,147 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:53,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-09 08:30:54,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:30:54,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:54,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-09 08:30:54,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:56,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938924213] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:56,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:56,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2021-11-09 08:30:56,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677486208] [2021-11-09 08:30:56,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-09 08:30:56,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-09 08:30:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1280, Invalid=7092, Unknown=0, NotChecked=0, Total=8372 [2021-11-09 08:30:56,078 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand has 92 states, 91 states have (on average 2.5054945054945055) internal successors, (228), 92 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:56,721 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2021-11-09 08:30:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-09 08:30:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 2.5054945054945055) internal successors, (228), 92 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-09 08:30:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:56,723 INFO L225 Difference]: With dead ends: 123 [2021-11-09 08:30:56,723 INFO L226 Difference]: Without dead ends: 122 [2021-11-09 08:30:56,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3636 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2569, Invalid=10313, Unknown=0, NotChecked=0, Total=12882 [2021-11-09 08:30:56,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-09 08:30:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2021-11-09 08:30:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0083333333333333) internal successors, (121), 120 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2021-11-09 08:30:56,726 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 115 [2021-11-09 08:30:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:56,727 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2021-11-09 08:30:56,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 2.5054945054945055) internal successors, (228), 92 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2021-11-09 08:30:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-09 08:30:56,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:56,728 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1] [2021-11-09 08:30:56,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-09 08:30:56,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-09 08:30:56,928 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:30:56,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash 542507505, now seen corresponding path program 23 times [2021-11-09 08:30:56,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:56,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813958123] [2021-11-09 08:30:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:56,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:57,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:57,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813958123] [2021-11-09 08:30:57,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813958123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:57,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474576708] [2021-11-09 08:30:57,946 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:30:57,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:57,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:57,947 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:57,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-09 08:30:58,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-09 08:30:58,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:30:58,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-09 08:30:58,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:01,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474576708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:01,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:01,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2021-11-09 08:31:01,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563944961] [2021-11-09 08:31:01,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-09 08:31:01,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-09 08:31:01,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1384, Invalid=7736, Unknown=0, NotChecked=0, Total=9120 [2021-11-09 08:31:01,013 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand has 96 states, 95 states have (on average 2.5052631578947366) internal successors, (238), 96 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:01,708 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2021-11-09 08:31:01,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-09 08:31:01,708 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.5052631578947366) internal successors, (238), 96 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-09 08:31:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:01,709 INFO L225 Difference]: With dead ends: 128 [2021-11-09 08:31:01,709 INFO L226 Difference]: Without dead ends: 127 [2021-11-09 08:31:01,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3974 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2789, Invalid=11253, Unknown=0, NotChecked=0, Total=14042 [2021-11-09 08:31:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-09 08:31:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-11-09 08:31:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.008) internal successors, (126), 125 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2021-11-09 08:31:01,714 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 120 [2021-11-09 08:31:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:01,714 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2021-11-09 08:31:01,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.5052631578947366) internal successors, (238), 96 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2021-11-09 08:31:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-09 08:31:01,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:01,715 INFO L513 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1] [2021-11-09 08:31:01,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-09 08:31:01,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-09 08:31:01,916 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:31:01,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash -128215131, now seen corresponding path program 24 times [2021-11-09 08:31:01,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:01,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092253241] [2021-11-09 08:31:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:01,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:02,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:02,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092253241] [2021-11-09 08:31:02,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092253241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:02,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797081975] [2021-11-09 08:31:02,937 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:31:02,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:02,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:31:02,942 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:31:02,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-09 08:31:03,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-09 08:31:03,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:03,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-09 08:31:03,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:06,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797081975] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:06,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:06,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2021-11-09 08:31:06,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449364982] [2021-11-09 08:31:06,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-09 08:31:06,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:06,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-09 08:31:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1492, Invalid=8408, Unknown=0, NotChecked=0, Total=9900 [2021-11-09 08:31:06,322 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand has 100 states, 99 states have (on average 2.505050505050505) internal successors, (248), 100 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:07,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:07,051 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2021-11-09 08:31:07,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-09 08:31:07,052 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.505050505050505) internal successors, (248), 100 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-09 08:31:07,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:07,053 INFO L225 Difference]: With dead ends: 133 [2021-11-09 08:31:07,053 INFO L226 Difference]: Without dead ends: 132 [2021-11-09 08:31:07,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4327 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3018, Invalid=12234, Unknown=0, NotChecked=0, Total=15252 [2021-11-09 08:31:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-09 08:31:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2021-11-09 08:31:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0076923076923077) internal successors, (131), 130 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2021-11-09 08:31:07,059 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 125 [2021-11-09 08:31:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:07,060 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2021-11-09 08:31:07,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.505050505050505) internal successors, (248), 100 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2021-11-09 08:31:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-09 08:31:07,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:07,062 INFO L513 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 1, 1, 1, 1] [2021-11-09 08:31:07,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:07,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:07,269 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:31:07,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash -793546127, now seen corresponding path program 25 times [2021-11-09 08:31:07,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:07,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903647191] [2021-11-09 08:31:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:07,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:08,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:08,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903647191] [2021-11-09 08:31:08,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903647191] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:08,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986496011] [2021-11-09 08:31:08,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:31:08,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:08,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:31:08,246 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:31:08,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-09 08:31:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:09,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-09 08:31:09,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:11,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986496011] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:11,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:11,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2021-11-09 08:31:11,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789951987] [2021-11-09 08:31:11,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-09 08:31:11,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:11,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-09 08:31:11,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1604, Invalid=9108, Unknown=0, NotChecked=0, Total=10712 [2021-11-09 08:31:11,729 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand has 104 states, 103 states have (on average 2.504854368932039) internal successors, (258), 104 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:12,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:12,521 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2021-11-09 08:31:12,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-09 08:31:12,521 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 2.504854368932039) internal successors, (258), 104 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-09 08:31:12,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:12,523 INFO L225 Difference]: With dead ends: 138 [2021-11-09 08:31:12,523 INFO L226 Difference]: Without dead ends: 137 [2021-11-09 08:31:12,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4695 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3256, Invalid=13256, Unknown=0, NotChecked=0, Total=16512 [2021-11-09 08:31:12,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-09 08:31:12,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2021-11-09 08:31:12,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0074074074074073) internal successors, (136), 135 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2021-11-09 08:31:12,527 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 130 [2021-11-09 08:31:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:12,528 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2021-11-09 08:31:12,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 2.504854368932039) internal successors, (258), 104 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2021-11-09 08:31:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-09 08:31:12,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:12,529 INFO L513 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 1, 1, 1, 1] [2021-11-09 08:31:12,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:12,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:12,745 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:31:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:12,746 INFO L85 PathProgramCache]: Analyzing trace with hash -212830427, now seen corresponding path program 26 times [2021-11-09 08:31:12,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:12,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026100249] [2021-11-09 08:31:12,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:12,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:13,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:13,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026100249] [2021-11-09 08:31:13,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026100249] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:13,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630657088] [2021-11-09 08:31:13,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:31:13,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:13,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:31:13,782 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:31:13,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-09 08:31:14,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:31:14,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:14,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-09 08:31:14,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:17,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630657088] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:17,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:17,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2021-11-09 08:31:17,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714786782] [2021-11-09 08:31:17,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-11-09 08:31:17,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:17,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-11-09 08:31:17,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1720, Invalid=9836, Unknown=0, NotChecked=0, Total=11556 [2021-11-09 08:31:17,729 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand has 108 states, 107 states have (on average 2.5046728971962615) internal successors, (268), 108 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:18,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:18,640 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2021-11-09 08:31:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-09 08:31:18,642 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 2.5046728971962615) internal successors, (268), 108 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-09 08:31:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:18,643 INFO L225 Difference]: With dead ends: 143 [2021-11-09 08:31:18,643 INFO L226 Difference]: Without dead ends: 142 [2021-11-09 08:31:18,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5078 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3503, Invalid=14319, Unknown=0, NotChecked=0, Total=17822 [2021-11-09 08:31:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-09 08:31:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2021-11-09 08:31:18,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.0071428571428571) internal successors, (141), 140 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2021-11-09 08:31:18,650 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 135 [2021-11-09 08:31:18,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:18,651 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2021-11-09 08:31:18,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 2.5046728971962615) internal successors, (268), 108 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:18,651 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2021-11-09 08:31:18,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-09 08:31:18,652 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:18,652 INFO L513 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 1, 1, 1, 1] [2021-11-09 08:31:18,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:18,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-09 08:31:18,867 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:31:18,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:18,867 INFO L85 PathProgramCache]: Analyzing trace with hash -245480719, now seen corresponding path program 27 times [2021-11-09 08:31:18,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:18,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062615111] [2021-11-09 08:31:18,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:18,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:20,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:20,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062615111] [2021-11-09 08:31:20,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062615111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:20,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931200067] [2021-11-09 08:31:20,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:31:20,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:20,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:31:20,001 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:31:20,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-09 08:31:21,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-09 08:31:21,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:21,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-09 08:31:21,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:24,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931200067] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:24,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:24,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2021-11-09 08:31:24,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879348522] [2021-11-09 08:31:24,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-11-09 08:31:24,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:24,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-11-09 08:31:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1840, Invalid=10592, Unknown=0, NotChecked=0, Total=12432 [2021-11-09 08:31:24,041 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand has 112 states, 111 states have (on average 2.5045045045045047) internal successors, (278), 112 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:24,904 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2021-11-09 08:31:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-09 08:31:24,905 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 2.5045045045045047) internal successors, (278), 112 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-09 08:31:24,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:24,906 INFO L225 Difference]: With dead ends: 148 [2021-11-09 08:31:24,906 INFO L226 Difference]: Without dead ends: 147 [2021-11-09 08:31:24,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5476 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3759, Invalid=15423, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 08:31:24,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-09 08:31:24,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-11-09 08:31:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.006896551724138) internal successors, (146), 145 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-11-09 08:31:24,913 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 140 [2021-11-09 08:31:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:24,914 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-11-09 08:31:24,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 2.5045045045045047) internal successors, (278), 112 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-11-09 08:31:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-09 08:31:24,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:24,915 INFO L513 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 1, 1, 1, 1] [2021-11-09 08:31:24,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-11-09 08:31:25,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-09 08:31:25,127 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:31:25,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:25,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2001991333, now seen corresponding path program 28 times [2021-11-09 08:31:25,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:25,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247994700] [2021-11-09 08:31:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:25,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:26,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:26,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247994700] [2021-11-09 08:31:26,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247994700] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:26,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412374445] [2021-11-09 08:31:26,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:31:26,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:26,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:31:26,486 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:31:26,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-09 08:31:27,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:31:27,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:27,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 87 conjunts are in the unsatisfiable core [2021-11-09 08:31:27,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:30,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412374445] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:30,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:30,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2021-11-09 08:31:30,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779551118] [2021-11-09 08:31:30,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-11-09 08:31:30,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:30,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-11-09 08:31:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1964, Invalid=11376, Unknown=0, NotChecked=0, Total=13340 [2021-11-09 08:31:30,896 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 116 states, 115 states have (on average 2.5043478260869567) internal successors, (288), 116 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:31,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:31,779 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2021-11-09 08:31:31,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-09 08:31:31,779 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 2.5043478260869567) internal successors, (288), 116 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-09 08:31:31,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:31,780 INFO L225 Difference]: With dead ends: 153 [2021-11-09 08:31:31,780 INFO L226 Difference]: Without dead ends: 152 [2021-11-09 08:31:31,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5889 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4024, Invalid=16568, Unknown=0, NotChecked=0, Total=20592 [2021-11-09 08:31:31,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-09 08:31:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2021-11-09 08:31:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.0066666666666666) internal successors, (151), 150 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2021-11-09 08:31:31,787 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 145 [2021-11-09 08:31:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:31,788 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2021-11-09 08:31:31,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 2.5043478260869567) internal successors, (288), 116 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2021-11-09 08:31:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-09 08:31:31,789 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:31,789 INFO L513 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 1, 1, 1, 1] [2021-11-09 08:31:31,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:32,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-09 08:31:32,004 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:31:32,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash 152990577, now seen corresponding path program 29 times [2021-11-09 08:31:32,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:32,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609129394] [2021-11-09 08:31:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:32,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:33,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:33,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609129394] [2021-11-09 08:31:33,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609129394] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:33,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476997430] [2021-11-09 08:31:33,517 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:31:33,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:31:33,518 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:31:33,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-09 08:31:34,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-09 08:31:34,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:34,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 90 conjunts are in the unsatisfiable core [2021-11-09 08:31:34,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:38,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:38,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476997430] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:38,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:38,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2021-11-09 08:31:38,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372142659] [2021-11-09 08:31:38,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-11-09 08:31:38,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:38,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-11-09 08:31:38,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2092, Invalid=12188, Unknown=0, NotChecked=0, Total=14280 [2021-11-09 08:31:38,162 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand has 120 states, 119 states have (on average 2.504201680672269) internal successors, (298), 120 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:39,121 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2021-11-09 08:31:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-09 08:31:39,121 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 2.504201680672269) internal successors, (298), 120 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-11-09 08:31:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:39,122 INFO L225 Difference]: With dead ends: 158 [2021-11-09 08:31:39,122 INFO L226 Difference]: Without dead ends: 157 [2021-11-09 08:31:39,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6317 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4298, Invalid=17754, Unknown=0, NotChecked=0, Total=22052 [2021-11-09 08:31:39,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-09 08:31:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-11-09 08:31:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0064516129032257) internal successors, (156), 155 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:39,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2021-11-09 08:31:39,128 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 150 [2021-11-09 08:31:39,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:39,128 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2021-11-09 08:31:39,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 2.504201680672269) internal successors, (298), 120 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:39,129 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2021-11-09 08:31:39,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-09 08:31:39,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:39,130 INFO L513 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1] [2021-11-09 08:31:39,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-11-09 08:31:39,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-09 08:31:39,339 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:31:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash -90302939, now seen corresponding path program 30 times [2021-11-09 08:31:39,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:39,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623189013] [2021-11-09 08:31:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:39,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:40,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:40,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623189013] [2021-11-09 08:31:40,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623189013] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:40,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517352347] [2021-11-09 08:31:40,681 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:31:40,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:40,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:31:40,682 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:31:40,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-09 08:31:42,141 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-09 08:31:42,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:42,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-09 08:31:42,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:45,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517352347] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:45,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:45,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2021-11-09 08:31:45,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771091631] [2021-11-09 08:31:45,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-11-09 08:31:45,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:45,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-11-09 08:31:45,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2224, Invalid=13028, Unknown=0, NotChecked=0, Total=15252 [2021-11-09 08:31:45,592 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand has 124 states, 123 states have (on average 2.5040650406504064) internal successors, (308), 124 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:46,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:46,934 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2021-11-09 08:31:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-09 08:31:46,934 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 2.5040650406504064) internal successors, (308), 124 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-11-09 08:31:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:46,936 INFO L225 Difference]: With dead ends: 163 [2021-11-09 08:31:46,936 INFO L226 Difference]: Without dead ends: 162 [2021-11-09 08:31:46,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6760 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4581, Invalid=18981, Unknown=0, NotChecked=0, Total=23562 [2021-11-09 08:31:46,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-09 08:31:46,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2021-11-09 08:31:46,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.00625) internal successors, (161), 160 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2021-11-09 08:31:46,947 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 155 [2021-11-09 08:31:46,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:46,948 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2021-11-09 08:31:46,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 2.5040650406504064) internal successors, (308), 124 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2021-11-09 08:31:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-09 08:31:46,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:46,951 INFO L513 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 1, 1, 1, 1] [2021-11-09 08:31:46,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:47,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-09 08:31:47,179 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:31:47,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:47,180 INFO L85 PathProgramCache]: Analyzing trace with hash -994311183, now seen corresponding path program 31 times [2021-11-09 08:31:47,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:47,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56518567] [2021-11-09 08:31:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:47,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:48,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:48,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56518567] [2021-11-09 08:31:48,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56518567] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:48,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751465380] [2021-11-09 08:31:48,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:31:48,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:48,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:31:48,694 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:31:48,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-09 08:31:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:50,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-09 08:31:50,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:53,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751465380] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:53,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:53,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2021-11-09 08:31:53,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146915417] [2021-11-09 08:31:53,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-09 08:31:53,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:53,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-09 08:31:53,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2360, Invalid=13896, Unknown=0, NotChecked=0, Total=16256 [2021-11-09 08:31:53,915 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand has 128 states, 127 states have (on average 2.5039370078740157) internal successors, (318), 128 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:54,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:54,962 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2021-11-09 08:31:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-09 08:31:54,962 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 2.5039370078740157) internal successors, (318), 128 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-09 08:31:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:54,963 INFO L225 Difference]: With dead ends: 168 [2021-11-09 08:31:54,963 INFO L226 Difference]: Without dead ends: 167 [2021-11-09 08:31:54,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7218 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4873, Invalid=20249, Unknown=0, NotChecked=0, Total=25122 [2021-11-09 08:31:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-09 08:31:54,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-11-09 08:31:54,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.006060606060606) internal successors, (166), 165 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2021-11-09 08:31:54,972 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 160 [2021-11-09 08:31:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:54,972 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2021-11-09 08:31:54,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 2.5039370078740157) internal successors, (318), 128 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:31:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2021-11-09 08:31:54,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-09 08:31:54,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:54,974 INFO L513 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 1, 1, 1, 1] [2021-11-09 08:31:55,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-11-09 08:31:55,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:55,199 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:31:55,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:55,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1922640475, now seen corresponding path program 32 times [2021-11-09 08:31:55,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:55,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313131719] [2021-11-09 08:31:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:55,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:56,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:56,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313131719] [2021-11-09 08:31:56,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313131719] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:31:56,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535166608] [2021-11-09 08:31:56,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:31:56,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:31:56,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:31:56,811 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:31:56,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-09 08:31:58,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:31:58,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:58,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-09 08:31:58,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:32:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:02,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535166608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:02,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:32:02,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2021-11-09 08:32:02,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990099556] [2021-11-09 08:32:02,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-09 08:32:02,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:32:02,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-09 08:32:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2500, Invalid=14792, Unknown=0, NotChecked=0, Total=17292 [2021-11-09 08:32:02,297 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 132 states, 131 states have (on average 2.50381679389313) internal successors, (328), 132 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:03,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:03,533 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2021-11-09 08:32:03,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-09 08:32:03,534 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 131 states have (on average 2.50381679389313) internal successors, (328), 132 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-09 08:32:03,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:32:03,535 INFO L225 Difference]: With dead ends: 173 [2021-11-09 08:32:03,535 INFO L226 Difference]: Without dead ends: 172 [2021-11-09 08:32:03,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7691 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5174, Invalid=21558, Unknown=0, NotChecked=0, Total=26732 [2021-11-09 08:32:03,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-09 08:32:03,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2021-11-09 08:32:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.0058823529411764) internal successors, (171), 170 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2021-11-09 08:32:03,543 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 165 [2021-11-09 08:32:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:32:03,544 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2021-11-09 08:32:03,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 131 states have (on average 2.50381679389313) internal successors, (328), 132 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2021-11-09 08:32:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-09 08:32:03,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:32:03,546 INFO L513 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 1, 1, 1, 1] [2021-11-09 08:32:03,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-09 08:32:03,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-09 08:32:03,775 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:32:03,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:03,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1996420209, now seen corresponding path program 33 times [2021-11-09 08:32:03,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:03,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481307488] [2021-11-09 08:32:03,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:03,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:05,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:32:05,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481307488] [2021-11-09 08:32:05,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481307488] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:05,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541111209] [2021-11-09 08:32:05,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:32:05,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:32:05,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:32:05,503 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:32:05,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-09 08:32:07,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-09 08:32:07,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:32:07,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-09 08:32:07,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:32:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:11,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541111209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:11,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:32:11,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2021-11-09 08:32:11,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955536538] [2021-11-09 08:32:11,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2021-11-09 08:32:11,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:32:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-11-09 08:32:11,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2644, Invalid=15716, Unknown=0, NotChecked=0, Total=18360 [2021-11-09 08:32:11,390 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand has 136 states, 135 states have (on average 2.5037037037037035) internal successors, (338), 136 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:12,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:12,676 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2021-11-09 08:32:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-09 08:32:12,677 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 135 states have (on average 2.5037037037037035) internal successors, (338), 136 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-11-09 08:32:12,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:32:12,678 INFO L225 Difference]: With dead ends: 178 [2021-11-09 08:32:12,678 INFO L226 Difference]: Without dead ends: 177 [2021-11-09 08:32:12,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8179 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5484, Invalid=22908, Unknown=0, NotChecked=0, Total=28392 [2021-11-09 08:32:12,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-09 08:32:12,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2021-11-09 08:32:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0057142857142858) internal successors, (176), 175 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2021-11-09 08:32:12,687 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 170 [2021-11-09 08:32:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:32:12,688 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2021-11-09 08:32:12,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 135 states have (on average 2.5037037037037035) internal successors, (338), 136 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2021-11-09 08:32:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 08:32:12,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:32:12,690 INFO L513 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 1, 1, 1, 1] [2021-11-09 08:32:12,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-09 08:32:12,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-09 08:32:12,911 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:32:12,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:12,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1508259109, now seen corresponding path program 34 times [2021-11-09 08:32:12,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:12,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948468857] [2021-11-09 08:32:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:12,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:14,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:32:14,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948468857] [2021-11-09 08:32:14,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948468857] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:14,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567774185] [2021-11-09 08:32:14,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:32:14,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:32:14,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:32:14,655 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:32:14,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-09 08:32:16,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:32:16,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:32:16,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 105 conjunts are in the unsatisfiable core [2021-11-09 08:32:16,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:32:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:20,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567774185] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:20,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:32:20,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2021-11-09 08:32:20,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717716979] [2021-11-09 08:32:20,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2021-11-09 08:32:20,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:32:20,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2021-11-09 08:32:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2792, Invalid=16668, Unknown=0, NotChecked=0, Total=19460 [2021-11-09 08:32:20,604 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand has 140 states, 139 states have (on average 2.5035971223021583) internal successors, (348), 140 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:21,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:21,913 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2021-11-09 08:32:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-09 08:32:21,914 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 139 states have (on average 2.5035971223021583) internal successors, (348), 140 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-11-09 08:32:21,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:32:21,915 INFO L225 Difference]: With dead ends: 183 [2021-11-09 08:32:21,915 INFO L226 Difference]: Without dead ends: 182 [2021-11-09 08:32:21,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8682 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5803, Invalid=24299, Unknown=0, NotChecked=0, Total=30102 [2021-11-09 08:32:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-09 08:32:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2021-11-09 08:32:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.0055555555555555) internal successors, (181), 180 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2021-11-09 08:32:21,926 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 175 [2021-11-09 08:32:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:32:21,927 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2021-11-09 08:32:21,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 139 states have (on average 2.5035971223021583) internal successors, (348), 140 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:21,928 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2021-11-09 08:32:21,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-09 08:32:21,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:32:21,929 INFO L513 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 1, 1, 1, 1] [2021-11-09 08:32:21,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-09 08:32:22,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-09 08:32:22,155 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:32:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1733344015, now seen corresponding path program 35 times [2021-11-09 08:32:22,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:22,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604540885] [2021-11-09 08:32:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:22,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:23,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:32:23,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604540885] [2021-11-09 08:32:23,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604540885] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:23,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740173566] [2021-11-09 08:32:23,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:32:23,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:32:23,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:32:23,990 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:32:23,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-09 08:32:25,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-09 08:32:25,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:32:25,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 108 conjunts are in the unsatisfiable core [2021-11-09 08:32:25,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:32:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:30,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740173566] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:30,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:32:30,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2021-11-09 08:32:30,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720514308] [2021-11-09 08:32:30,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2021-11-09 08:32:30,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:32:30,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2021-11-09 08:32:30,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2944, Invalid=17648, Unknown=0, NotChecked=0, Total=20592 [2021-11-09 08:32:30,230 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand has 144 states, 143 states have (on average 2.5034965034965033) internal successors, (358), 144 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:31,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:31,557 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2021-11-09 08:32:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-09 08:32:31,557 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 143 states have (on average 2.5034965034965033) internal successors, (358), 144 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-11-09 08:32:31,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:32:31,558 INFO L225 Difference]: With dead ends: 188 [2021-11-09 08:32:31,558 INFO L226 Difference]: Without dead ends: 187 [2021-11-09 08:32:31,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9200 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6131, Invalid=25731, Unknown=0, NotChecked=0, Total=31862 [2021-11-09 08:32:31,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-09 08:32:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2021-11-09 08:32:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.0054054054054054) internal successors, (186), 185 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:31,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2021-11-09 08:32:31,564 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 180 [2021-11-09 08:32:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:32:31,564 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2021-11-09 08:32:31,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 143 states have (on average 2.5034965034965033) internal successors, (358), 144 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2021-11-09 08:32:31,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-09 08:32:31,565 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:32:31,565 INFO L513 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 1, 1, 1, 1] [2021-11-09 08:32:31,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-11-09 08:32:31,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:32:31,765 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:32:31,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:31,766 INFO L85 PathProgramCache]: Analyzing trace with hash 609498277, now seen corresponding path program 36 times [2021-11-09 08:32:31,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:31,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705713428] [2021-11-09 08:32:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:31,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:33,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:32:33,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705713428] [2021-11-09 08:32:33,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705713428] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:33,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491190793] [2021-11-09 08:32:33,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:32:33,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:32:33,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:32:33,575 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:32:33,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-09 08:32:35,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-09 08:32:35,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:32:35,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 111 conjunts are in the unsatisfiable core [2021-11-09 08:32:35,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:32:40,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:40,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491190793] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:40,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:32:40,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2021-11-09 08:32:40,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226447543] [2021-11-09 08:32:40,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2021-11-09 08:32:40,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:32:40,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2021-11-09 08:32:40,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3100, Invalid=18656, Unknown=0, NotChecked=0, Total=21756 [2021-11-09 08:32:40,342 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand has 148 states, 147 states have (on average 2.503401360544218) internal successors, (368), 148 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:41,799 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2021-11-09 08:32:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-09 08:32:41,799 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 147 states have (on average 2.503401360544218) internal successors, (368), 148 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-11-09 08:32:41,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:32:41,801 INFO L225 Difference]: With dead ends: 193 [2021-11-09 08:32:41,801 INFO L226 Difference]: Without dead ends: 192 [2021-11-09 08:32:41,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9733 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=6468, Invalid=27204, Unknown=0, NotChecked=0, Total=33672 [2021-11-09 08:32:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-09 08:32:41,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2021-11-09 08:32:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2021-11-09 08:32:41,809 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 185 [2021-11-09 08:32:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:32:41,810 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2021-11-09 08:32:41,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 147 states have (on average 2.503401360544218) internal successors, (368), 148 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2021-11-09 08:32:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-09 08:32:41,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:32:41,812 INFO L513 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1] [2021-11-09 08:32:41,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-09 08:32:42,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:32:42,025 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:32:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:42,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1217721713, now seen corresponding path program 37 times [2021-11-09 08:32:42,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:42,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375811377] [2021-11-09 08:32:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:42,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:44,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:32:44,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375811377] [2021-11-09 08:32:44,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375811377] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:44,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653139698] [2021-11-09 08:32:44,127 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:32:44,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:32:44,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:32:44,128 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:32:44,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-09 08:32:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:46,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 114 conjunts are in the unsatisfiable core [2021-11-09 08:32:46,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:32:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:51,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653139698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:51,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:32:51,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 151 [2021-11-09 08:32:51,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545571029] [2021-11-09 08:32:51,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2021-11-09 08:32:51,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:32:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2021-11-09 08:32:51,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3260, Invalid=19692, Unknown=0, NotChecked=0, Total=22952 [2021-11-09 08:32:51,113 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand has 152 states, 151 states have (on average 2.5033112582781456) internal successors, (378), 152 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:52,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:52,621 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2021-11-09 08:32:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-11-09 08:32:52,621 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 151 states have (on average 2.5033112582781456) internal successors, (378), 152 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-11-09 08:32:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:32:52,623 INFO L225 Difference]: With dead ends: 198 [2021-11-09 08:32:52,623 INFO L226 Difference]: Without dead ends: 197 [2021-11-09 08:32:52,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10281 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=6814, Invalid=28718, Unknown=0, NotChecked=0, Total=35532 [2021-11-09 08:32:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-09 08:32:52,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-11-09 08:32:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.005128205128205) internal successors, (196), 195 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:52,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2021-11-09 08:32:52,641 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 190 [2021-11-09 08:32:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:32:52,643 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2021-11-09 08:32:52,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 151 states have (on average 2.5033112582781456) internal successors, (378), 152 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:52,644 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2021-11-09 08:32:52,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-09 08:32:52,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:32:52,645 INFO L513 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1] [2021-11-09 08:32:52,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-11-09 08:32:52,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:32:52,867 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:32:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash -890711003, now seen corresponding path program 38 times [2021-11-09 08:32:52,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:52,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671030212] [2021-11-09 08:32:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:52,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:54,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:32:54,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671030212] [2021-11-09 08:32:54,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671030212] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:32:54,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138060116] [2021-11-09 08:32:54,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:32:54,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:32:54,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:32:54,871 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:32:54,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-09 08:32:57,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:32:57,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:32:57,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 117 conjunts are in the unsatisfiable core [2021-11-09 08:32:57,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:02,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138060116] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:33:02,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:33:02,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2021-11-09 08:33:02,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005861909] [2021-11-09 08:33:02,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2021-11-09 08:33:02,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2021-11-09 08:33:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3424, Invalid=20756, Unknown=0, NotChecked=0, Total=24180 [2021-11-09 08:33:02,284 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand has 156 states, 155 states have (on average 2.503225806451613) internal successors, (388), 156 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:03,803 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2021-11-09 08:33:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-09 08:33:03,803 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 155 states have (on average 2.503225806451613) internal successors, (388), 156 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-11-09 08:33:03,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:03,804 INFO L225 Difference]: With dead ends: 203 [2021-11-09 08:33:03,805 INFO L226 Difference]: Without dead ends: 202 [2021-11-09 08:33:03,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10844 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=7169, Invalid=30273, Unknown=0, NotChecked=0, Total=37442 [2021-11-09 08:33:03,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-09 08:33:03,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2021-11-09 08:33:03,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.005) internal successors, (201), 200 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2021-11-09 08:33:03,813 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 195 [2021-11-09 08:33:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:03,813 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2021-11-09 08:33:03,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 155 states have (on average 2.503225806451613) internal successors, (388), 156 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:03,814 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2021-11-09 08:33:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-09 08:33:03,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:03,815 INFO L513 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 1, 1, 1, 1] [2021-11-09 08:33:03,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-09 08:33:04,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:33:04,031 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:33:04,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:04,032 INFO L85 PathProgramCache]: Analyzing trace with hash -881326607, now seen corresponding path program 39 times [2021-11-09 08:33:04,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:04,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640723336] [2021-11-09 08:33:04,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:04,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:06,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:06,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640723336] [2021-11-09 08:33:06,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640723336] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:33:06,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371439716] [2021-11-09 08:33:06,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:33:06,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:33:06,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:33:06,201 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:33:06,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-09 08:33:08,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-09 08:33:08,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:33:08,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 120 conjunts are in the unsatisfiable core [2021-11-09 08:33:08,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:14,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371439716] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:33:14,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:33:14,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 159 [2021-11-09 08:33:14,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936179888] [2021-11-09 08:33:14,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 160 states [2021-11-09 08:33:14,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:14,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2021-11-09 08:33:14,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3592, Invalid=21848, Unknown=0, NotChecked=0, Total=25440 [2021-11-09 08:33:14,227 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand has 160 states, 159 states have (on average 2.50314465408805) internal successors, (398), 160 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:15,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:15,855 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2021-11-09 08:33:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-11-09 08:33:15,856 INFO L78 Accepts]: Start accepts. Automaton has has 160 states, 159 states have (on average 2.50314465408805) internal successors, (398), 160 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-11-09 08:33:15,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:15,861 INFO L225 Difference]: With dead ends: 208 [2021-11-09 08:33:15,861 INFO L226 Difference]: Without dead ends: 207 [2021-11-09 08:33:15,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11422 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=7533, Invalid=31869, Unknown=0, NotChecked=0, Total=39402 [2021-11-09 08:33:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-09 08:33:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-11-09 08:33:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.0048780487804878) internal successors, (206), 205 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2021-11-09 08:33:15,867 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 200 [2021-11-09 08:33:15,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:15,867 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2021-11-09 08:33:15,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 160 states, 159 states have (on average 2.50314465408805) internal successors, (398), 160 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:15,867 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2021-11-09 08:33:15,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-09 08:33:15,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:15,868 INFO L513 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 1, 1, 1, 1] [2021-11-09 08:33:15,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-09 08:33:16,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:33:16,069 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:33:16,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash -975432795, now seen corresponding path program 40 times [2021-11-09 08:33:16,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:16,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690623610] [2021-11-09 08:33:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:16,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:18,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:18,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690623610] [2021-11-09 08:33:18,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690623610] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:33:18,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352303656] [2021-11-09 08:33:18,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:33:18,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:33:18,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:33:18,436 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:33:18,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-09 08:33:21,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:33:21,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:33:21,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 123 conjunts are in the unsatisfiable core [2021-11-09 08:33:21,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:26,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352303656] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:33:26,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:33:26,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 163 [2021-11-09 08:33:26,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296173572] [2021-11-09 08:33:26,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2021-11-09 08:33:26,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:26,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2021-11-09 08:33:26,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3764, Invalid=22968, Unknown=0, NotChecked=0, Total=26732 [2021-11-09 08:33:26,566 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand has 164 states, 163 states have (on average 2.503067484662577) internal successors, (408), 164 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:28,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:28,213 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2021-11-09 08:33:28,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-11-09 08:33:28,214 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 163 states have (on average 2.503067484662577) internal successors, (408), 164 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2021-11-09 08:33:28,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:28,215 INFO L225 Difference]: With dead ends: 213 [2021-11-09 08:33:28,215 INFO L226 Difference]: Without dead ends: 212 [2021-11-09 08:33:28,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12015 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=7906, Invalid=33506, Unknown=0, NotChecked=0, Total=41412 [2021-11-09 08:33:28,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-09 08:33:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2021-11-09 08:33:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.0047619047619047) internal successors, (211), 210 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2021-11-09 08:33:28,223 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 205 [2021-11-09 08:33:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:28,223 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2021-11-09 08:33:28,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 163 states have (on average 2.503067484662577) internal successors, (408), 164 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:28,223 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2021-11-09 08:33:28,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-09 08:33:28,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:28,225 INFO L513 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 1, 1, 1, 1] [2021-11-09 08:33:28,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-09 08:33:28,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:33:28,451 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:33:28,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash 203454065, now seen corresponding path program 41 times [2021-11-09 08:33:28,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:28,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113586848] [2021-11-09 08:33:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:28,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:30,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:30,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113586848] [2021-11-09 08:33:30,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113586848] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:33:30,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806774494] [2021-11-09 08:33:30,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:33:30,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:33:30,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:33:30,746 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:33:30,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-09 08:33:33,473 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-09 08:33:33,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:33:33,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 126 conjunts are in the unsatisfiable core [2021-11-09 08:33:33,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:39,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806774494] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:33:39,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:33:39,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 167 [2021-11-09 08:33:39,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916897374] [2021-11-09 08:33:39,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2021-11-09 08:33:39,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:39,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2021-11-09 08:33:39,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3940, Invalid=24116, Unknown=0, NotChecked=0, Total=28056 [2021-11-09 08:33:39,293 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand has 168 states, 167 states have (on average 2.502994011976048) internal successors, (418), 168 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:41,012 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2021-11-09 08:33:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-09 08:33:41,012 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 167 states have (on average 2.502994011976048) internal successors, (418), 168 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-09 08:33:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:41,014 INFO L225 Difference]: With dead ends: 218 [2021-11-09 08:33:41,014 INFO L226 Difference]: Without dead ends: 217 [2021-11-09 08:33:41,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12623 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=8288, Invalid=35184, Unknown=0, NotChecked=0, Total=43472 [2021-11-09 08:33:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-09 08:33:41,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2021-11-09 08:33:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0046511627906978) internal successors, (216), 215 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2021-11-09 08:33:41,019 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 210 [2021-11-09 08:33:41,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:41,020 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2021-11-09 08:33:41,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 167 states have (on average 2.502994011976048) internal successors, (418), 168 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:41,020 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2021-11-09 08:33:41,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-09 08:33:41,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:41,021 INFO L513 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 1, 1, 1, 1] [2021-11-09 08:33:41,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-11-09 08:33:41,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-09 08:33:41,231 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:33:41,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:41,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1486490843, now seen corresponding path program 42 times [2021-11-09 08:33:41,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:41,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169534097] [2021-11-09 08:33:41,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:41,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:43,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:43,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169534097] [2021-11-09 08:33:43,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169534097] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:33:43,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353032968] [2021-11-09 08:33:43,723 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:33:43,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:33:43,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:33:43,726 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:33:43,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-09 08:33:46,641 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-09 08:33:46,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:33:46,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 129 conjunts are in the unsatisfiable core [2021-11-09 08:33:46,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:52,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353032968] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:33:52,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:33:52,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 171 [2021-11-09 08:33:52,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50084440] [2021-11-09 08:33:52,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2021-11-09 08:33:52,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:52,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2021-11-09 08:33:52,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4120, Invalid=25292, Unknown=0, NotChecked=0, Total=29412 [2021-11-09 08:33:52,853 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand has 172 states, 171 states have (on average 2.502923976608187) internal successors, (428), 172 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:54,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:54,602 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2021-11-09 08:33:54,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-11-09 08:33:54,603 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 171 states have (on average 2.502923976608187) internal successors, (428), 172 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2021-11-09 08:33:54,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:54,604 INFO L225 Difference]: With dead ends: 223 [2021-11-09 08:33:54,604 INFO L226 Difference]: Without dead ends: 222 [2021-11-09 08:33:54,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13246 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=8679, Invalid=36903, Unknown=0, NotChecked=0, Total=45582 [2021-11-09 08:33:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-09 08:33:54,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2021-11-09 08:33:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.0045454545454546) internal successors, (221), 220 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2021-11-09 08:33:54,612 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 215 [2021-11-09 08:33:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:54,613 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2021-11-09 08:33:54,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 171 states have (on average 2.502923976608187) internal successors, (428), 172 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2021-11-09 08:33:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-09 08:33:54,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:54,614 INFO L513 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 1, 1, 1, 1] [2021-11-09 08:33:54,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-09 08:33:54,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-09 08:33:54,815 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:33:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:54,815 INFO L85 PathProgramCache]: Analyzing trace with hash 458639089, now seen corresponding path program 43 times [2021-11-09 08:33:54,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:54,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951570815] [2021-11-09 08:33:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:54,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:57,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:57,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951570815] [2021-11-09 08:33:57,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951570815] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:33:57,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133662801] [2021-11-09 08:33:57,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:33:57,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:33:57,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:33:57,284 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:33:57,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-09 08:34:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:00,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 132 conjunts are in the unsatisfiable core [2021-11-09 08:34:00,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:06,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133662801] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:06,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:34:06,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 175 [2021-11-09 08:34:06,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38124296] [2021-11-09 08:34:06,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2021-11-09 08:34:06,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:06,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2021-11-09 08:34:06,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4304, Invalid=26496, Unknown=0, NotChecked=0, Total=30800 [2021-11-09 08:34:06,329 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand has 176 states, 175 states have (on average 2.5028571428571427) internal successors, (438), 176 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:08,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:08,187 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2021-11-09 08:34:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-11-09 08:34:08,188 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 175 states have (on average 2.5028571428571427) internal successors, (438), 176 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2021-11-09 08:34:08,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:08,189 INFO L225 Difference]: With dead ends: 228 [2021-11-09 08:34:08,189 INFO L226 Difference]: Without dead ends: 227 [2021-11-09 08:34:08,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13884 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=9079, Invalid=38663, Unknown=0, NotChecked=0, Total=47742 [2021-11-09 08:34:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-09 08:34:08,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2021-11-09 08:34:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.0044444444444445) internal successors, (226), 225 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2021-11-09 08:34:08,199 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 220 [2021-11-09 08:34:08,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:08,199 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2021-11-09 08:34:08,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 175 states have (on average 2.5028571428571427) internal successors, (438), 176 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2021-11-09 08:34:08,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-09 08:34:08,200 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:08,200 INFO L513 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 1, 1, 1, 1] [2021-11-09 08:34:08,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:08,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-09 08:34:08,401 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:34:08,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:08,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1682017627, now seen corresponding path program 44 times [2021-11-09 08:34:08,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:08,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908596235] [2021-11-09 08:34:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:08,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:11,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:11,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908596235] [2021-11-09 08:34:11,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908596235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:11,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340495910] [2021-11-09 08:34:11,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:34:11,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:11,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:11,231 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:34:11,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-09 08:34:14,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:34:14,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:34:14,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 135 conjunts are in the unsatisfiable core [2021-11-09 08:34:14,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:20,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340495910] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:20,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:34:20,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 179 [2021-11-09 08:34:20,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073448811] [2021-11-09 08:34:20,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2021-11-09 08:34:20,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:20,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2021-11-09 08:34:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4492, Invalid=27728, Unknown=0, NotChecked=0, Total=32220 [2021-11-09 08:34:20,648 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand has 180 states, 179 states have (on average 2.5027932960893855) internal successors, (448), 180 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:22,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:22,611 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2021-11-09 08:34:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-11-09 08:34:22,611 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 179 states have (on average 2.5027932960893855) internal successors, (448), 180 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2021-11-09 08:34:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:22,613 INFO L225 Difference]: With dead ends: 233 [2021-11-09 08:34:22,613 INFO L226 Difference]: Without dead ends: 232 [2021-11-09 08:34:22,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14537 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=9488, Invalid=40464, Unknown=0, NotChecked=0, Total=49952 [2021-11-09 08:34:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-09 08:34:22,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2021-11-09 08:34:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.0043478260869565) internal successors, (231), 230 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2021-11-09 08:34:22,624 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 225 [2021-11-09 08:34:22,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:22,624 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2021-11-09 08:34:22,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 179 states have (on average 2.5027932960893855) internal successors, (448), 180 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:22,625 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2021-11-09 08:34:22,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-09 08:34:22,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:22,626 INFO L513 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 1, 1, 1, 1] [2021-11-09 08:34:22,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-11-09 08:34:22,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-09 08:34:22,831 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:34:22,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:22,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1344178319, now seen corresponding path program 45 times [2021-11-09 08:34:22,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:22,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903329086] [2021-11-09 08:34:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:22,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:25,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:25,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903329086] [2021-11-09 08:34:25,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903329086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:25,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947852093] [2021-11-09 08:34:25,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:34:25,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:25,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:25,519 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:34:25,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-09 08:34:29,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-09 08:34:29,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:34:29,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 138 conjunts are in the unsatisfiable core [2021-11-09 08:34:29,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:35,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947852093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:35,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:34:35,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 183 [2021-11-09 08:34:35,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286554608] [2021-11-09 08:34:35,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2021-11-09 08:34:35,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:35,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2021-11-09 08:34:35,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4684, Invalid=28988, Unknown=0, NotChecked=0, Total=33672 [2021-11-09 08:34:35,943 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand has 184 states, 183 states have (on average 2.5027322404371586) internal successors, (458), 184 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:37,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:37,906 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2021-11-09 08:34:37,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-11-09 08:34:37,906 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 183 states have (on average 2.5027322404371586) internal successors, (458), 184 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2021-11-09 08:34:37,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:37,908 INFO L225 Difference]: With dead ends: 238 [2021-11-09 08:34:37,908 INFO L226 Difference]: Without dead ends: 237 [2021-11-09 08:34:37,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15205 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=9906, Invalid=42306, Unknown=0, NotChecked=0, Total=52212 [2021-11-09 08:34:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-09 08:34:37,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2021-11-09 08:34:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.004255319148936) internal successors, (236), 235 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2021-11-09 08:34:37,919 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 230 [2021-11-09 08:34:37,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:37,919 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2021-11-09 08:34:37,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 183 states have (on average 2.5027322404371586) internal successors, (458), 184 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:37,920 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2021-11-09 08:34:37,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-09 08:34:37,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:37,921 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-11-09 08:34:37,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:38,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:38,138 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:34:38,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash -383938011, now seen corresponding path program 46 times [2021-11-09 08:34:38,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:38,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485204160] [2021-11-09 08:34:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:38,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:40,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:40,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485204160] [2021-11-09 08:34:40,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485204160] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:40,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825110989] [2021-11-09 08:34:40,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:34:40,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:40,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:40,939 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:34:40,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-09 08:34:44,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:34:44,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:34:44,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 141 conjunts are in the unsatisfiable core [2021-11-09 08:34:44,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:51,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825110989] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:51,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:34:51,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 187 [2021-11-09 08:34:51,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461358002] [2021-11-09 08:34:51,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2021-11-09 08:34:51,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:51,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2021-11-09 08:34:51,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4880, Invalid=30276, Unknown=0, NotChecked=0, Total=35156 [2021-11-09 08:34:51,370 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand has 188 states, 187 states have (on average 2.5026737967914436) internal successors, (468), 188 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:53,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:53,454 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2021-11-09 08:34:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-09 08:34:53,455 INFO L78 Accepts]: Start accepts. Automaton has has 188 states, 187 states have (on average 2.5026737967914436) internal successors, (468), 188 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-11-09 08:34:53,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:53,456 INFO L225 Difference]: With dead ends: 243 [2021-11-09 08:34:53,456 INFO L226 Difference]: Without dead ends: 242 [2021-11-09 08:34:53,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15888 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=10333, Invalid=44189, Unknown=0, NotChecked=0, Total=54522 [2021-11-09 08:34:53,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-09 08:34:53,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 241. [2021-11-09 08:34:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.0041666666666667) internal successors, (241), 240 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2021-11-09 08:34:53,463 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 235 [2021-11-09 08:34:53,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:53,463 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2021-11-09 08:34:53,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 188 states, 187 states have (on average 2.5026737967914436) internal successors, (468), 188 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2021-11-09 08:34:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-09 08:34:53,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:53,464 INFO L513 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 1, 1, 1, 1] [2021-11-09 08:34:53,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:53,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:53,665 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:34:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:53,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1500903439, now seen corresponding path program 47 times [2021-11-09 08:34:53,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:53,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169737114] [2021-11-09 08:34:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:53,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:56,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:56,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169737114] [2021-11-09 08:34:56,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169737114] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:56,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640845813] [2021-11-09 08:34:56,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:34:56,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:56,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:56,604 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:34:56,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-09 08:35:00,053 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-09 08:35:00,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:35:00,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 144 conjunts are in the unsatisfiable core [2021-11-09 08:35:00,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:35:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:07,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640845813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:35:07,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:35:07,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2021-11-09 08:35:07,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462559849] [2021-11-09 08:35:07,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-09 08:35:07,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:07,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-09 08:35:07,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5080, Invalid=31592, Unknown=0, NotChecked=0, Total=36672 [2021-11-09 08:35:07,302 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand has 192 states, 191 states have (on average 2.5026178010471205) internal successors, (478), 192 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:09,378 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2021-11-09 08:35:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-11-09 08:35:09,378 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 2.5026178010471205) internal successors, (478), 192 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2021-11-09 08:35:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:09,379 INFO L225 Difference]: With dead ends: 248 [2021-11-09 08:35:09,379 INFO L226 Difference]: Without dead ends: 247 [2021-11-09 08:35:09,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16586 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=10769, Invalid=46113, Unknown=0, NotChecked=0, Total=56882 [2021-11-09 08:35:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-09 08:35:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2021-11-09 08:35:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.0040816326530613) internal successors, (246), 245 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2021-11-09 08:35:09,388 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 240 [2021-11-09 08:35:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:09,389 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2021-11-09 08:35:09,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 2.5026178010471205) internal successors, (478), 192 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2021-11-09 08:35:09,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-09 08:35:09,391 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:09,391 INFO L513 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 1, 1, 1, 1] [2021-11-09 08:35:09,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-09 08:35:09,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:35:09,607 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:35:09,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:09,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1874547109, now seen corresponding path program 48 times [2021-11-09 08:35:09,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:09,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126996908] [2021-11-09 08:35:09,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:09,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:12,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:12,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126996908] [2021-11-09 08:35:12,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126996908] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:35:12,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44563618] [2021-11-09 08:35:12,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:35:12,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:35:12,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:35:12,743 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:35:12,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-09 08:35:16,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-09 08:35:16,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:35:16,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 147 conjunts are in the unsatisfiable core [2021-11-09 08:35:16,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:35:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:23,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44563618] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:35:23,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:35:23,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2021-11-09 08:35:23,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376919611] [2021-11-09 08:35:23,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2021-11-09 08:35:23,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:23,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2021-11-09 08:35:23,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5284, Invalid=32936, Unknown=0, NotChecked=0, Total=38220 [2021-11-09 08:35:23,863 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand has 196 states, 195 states have (on average 2.5025641025641026) internal successors, (488), 196 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:26,147 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2021-11-09 08:35:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-11-09 08:35:26,147 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 195 states have (on average 2.5025641025641026) internal successors, (488), 196 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2021-11-09 08:35:26,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:26,148 INFO L225 Difference]: With dead ends: 253 [2021-11-09 08:35:26,148 INFO L226 Difference]: Without dead ends: 252 [2021-11-09 08:35:26,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17299 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=11214, Invalid=48078, Unknown=0, NotChecked=0, Total=59292 [2021-11-09 08:35:26,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-09 08:35:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251. [2021-11-09 08:35:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.004) internal successors, (251), 250 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:26,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2021-11-09 08:35:26,159 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 245 [2021-11-09 08:35:26,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:26,159 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2021-11-09 08:35:26,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 195 states have (on average 2.5025641025641026) internal successors, (488), 196 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:26,160 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2021-11-09 08:35:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-09 08:35:26,161 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:26,161 INFO L513 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 1, 1, 1, 1] [2021-11-09 08:35:26,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-09 08:35:26,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:35:26,382 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:35:26,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:26,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2112358287, now seen corresponding path program 49 times [2021-11-09 08:35:26,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:26,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107739359] [2021-11-09 08:35:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:26,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:29,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:29,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107739359] [2021-11-09 08:35:29,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107739359] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:35:29,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572358117] [2021-11-09 08:35:29,540 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:35:29,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:35:29,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:35:29,541 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:35:29,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-09 08:35:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:33,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 150 conjunts are in the unsatisfiable core [2021-11-09 08:35:33,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:35:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:41,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572358117] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:35:41,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:35:41,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 199 [2021-11-09 08:35:41,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325811469] [2021-11-09 08:35:41,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2021-11-09 08:35:41,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:41,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2021-11-09 08:35:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5492, Invalid=34308, Unknown=0, NotChecked=0, Total=39800 [2021-11-09 08:35:41,101 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand has 200 states, 199 states have (on average 2.5025125628140703) internal successors, (498), 200 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:43,572 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2021-11-09 08:35:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-09 08:35:43,573 INFO L78 Accepts]: Start accepts. Automaton has has 200 states, 199 states have (on average 2.5025125628140703) internal successors, (498), 200 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2021-11-09 08:35:43,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:43,574 INFO L225 Difference]: With dead ends: 258 [2021-11-09 08:35:43,574 INFO L226 Difference]: Without dead ends: 257 [2021-11-09 08:35:43,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18027 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=11668, Invalid=50084, Unknown=0, NotChecked=0, Total=61752 [2021-11-09 08:35:43,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-09 08:35:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2021-11-09 08:35:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.003921568627451) internal successors, (256), 255 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2021-11-09 08:35:43,588 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 250 [2021-11-09 08:35:43,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:43,588 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2021-11-09 08:35:43,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 199 states have (on average 2.5025125628140703) internal successors, (498), 200 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:35:43,589 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2021-11-09 08:35:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-09 08:35:43,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:43,591 INFO L513 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 1, 1, 1, 1] [2021-11-09 08:35:43,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-11-09 08:35:43,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-11-09 08:35:43,807 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:35:43,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:43,807 INFO L85 PathProgramCache]: Analyzing trace with hash 701477157, now seen corresponding path program 50 times [2021-11-09 08:35:43,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:35:43,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918198608] [2021-11-09 08:35:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:35:43,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:35:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:35:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:47,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:35:47,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918198608] [2021-11-09 08:35:47,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918198608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:35:47,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126816830] [2021-11-09 08:35:47,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:35:47,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:35:47,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:35:47,213 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:35:47,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-09 08:35:51,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:35:51,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:35:51,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 153 conjunts are in the unsatisfiable core [2021-11-09 08:35:51,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:35:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:59,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126816830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:35:59,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:35:59,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 203 [2021-11-09 08:35:59,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893507530] [2021-11-09 08:35:59,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2021-11-09 08:35:59,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:35:59,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2021-11-09 08:35:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5704, Invalid=35708, Unknown=0, NotChecked=0, Total=41412 [2021-11-09 08:35:59,033 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand has 204 states, 203 states have (on average 2.502463054187192) internal successors, (508), 204 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:01,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:36:01,554 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2021-11-09 08:36:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-09 08:36:01,554 INFO L78 Accepts]: Start accepts. Automaton has has 204 states, 203 states have (on average 2.502463054187192) internal successors, (508), 204 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2021-11-09 08:36:01,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:36:01,555 INFO L225 Difference]: With dead ends: 263 [2021-11-09 08:36:01,555 INFO L226 Difference]: Without dead ends: 262 [2021-11-09 08:36:01,558 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18770 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=12131, Invalid=52131, Unknown=0, NotChecked=0, Total=64262 [2021-11-09 08:36:01,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-09 08:36:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261. [2021-11-09 08:36:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.0038461538461538) internal successors, (261), 260 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2021-11-09 08:36:01,563 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 255 [2021-11-09 08:36:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:36:01,563 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2021-11-09 08:36:01,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 203 states have (on average 2.502463054187192) internal successors, (508), 204 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2021-11-09 08:36:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-09 08:36:01,565 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:36:01,565 INFO L513 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 1, 1, 1, 1] [2021-11-09 08:36:01,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-09 08:36:01,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-11-09 08:36:01,779 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:36:01,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:36:01,779 INFO L85 PathProgramCache]: Analyzing trace with hash -346863375, now seen corresponding path program 51 times [2021-11-09 08:36:01,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:36:01,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240232602] [2021-11-09 08:36:01,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:36:01,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:36:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:36:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:36:05,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:36:05,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240232602] [2021-11-09 08:36:05,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240232602] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:36:05,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799825557] [2021-11-09 08:36:05,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:36:05,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:36:05,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:36:05,141 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:36:05,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-09 08:36:09,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-09 08:36:09,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:36:09,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 156 conjunts are in the unsatisfiable core [2021-11-09 08:36:09,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:36:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:36:17,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799825557] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:36:17,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:36:17,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 207 [2021-11-09 08:36:17,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110534538] [2021-11-09 08:36:17,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 208 states [2021-11-09 08:36:17,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:36:17,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2021-11-09 08:36:17,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5920, Invalid=37136, Unknown=0, NotChecked=0, Total=43056 [2021-11-09 08:36:17,698 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand has 208 states, 207 states have (on average 2.502415458937198) internal successors, (518), 208 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:20,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:36:20,251 INFO L93 Difference]: Finished difference Result 268 states and 268 transitions. [2021-11-09 08:36:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-11-09 08:36:20,251 INFO L78 Accepts]: Start accepts. Automaton has has 208 states, 207 states have (on average 2.502415458937198) internal successors, (518), 208 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2021-11-09 08:36:20,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:36:20,252 INFO L225 Difference]: With dead ends: 268 [2021-11-09 08:36:20,252 INFO L226 Difference]: Without dead ends: 267 [2021-11-09 08:36:20,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19528 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=12603, Invalid=54219, Unknown=0, NotChecked=0, Total=66822 [2021-11-09 08:36:20,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-09 08:36:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2021-11-09 08:36:20,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.0037735849056604) internal successors, (266), 265 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:20,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2021-11-09 08:36:20,261 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 260 [2021-11-09 08:36:20,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:36:20,261 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2021-11-09 08:36:20,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 208 states, 207 states have (on average 2.502415458937198) internal successors, (518), 208 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:20,262 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2021-11-09 08:36:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-09 08:36:20,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:36:20,264 INFO L513 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 1, 1, 1, 1] [2021-11-09 08:36:20,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-11-09 08:36:20,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-09 08:36:20,465 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:36:20,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:36:20,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1416449883, now seen corresponding path program 52 times [2021-11-09 08:36:20,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:36:20,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447791404] [2021-11-09 08:36:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:36:20,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:36:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:36:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:36:24,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:36:24,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447791404] [2021-11-09 08:36:24,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447791404] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:36:24,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829968179] [2021-11-09 08:36:24,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:36:24,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:36:24,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:36:24,014 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:36:24,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-09 08:36:28,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:36:28,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:36:28,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 159 conjunts are in the unsatisfiable core [2021-11-09 08:36:28,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:36:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:36:36,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829968179] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:36:36,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:36:36,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 211 [2021-11-09 08:36:36,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466370454] [2021-11-09 08:36:36,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 212 states [2021-11-09 08:36:36,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:36:36,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2021-11-09 08:36:36,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6140, Invalid=38592, Unknown=0, NotChecked=0, Total=44732 [2021-11-09 08:36:36,945 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand has 212 states, 211 states have (on average 2.5023696682464456) internal successors, (528), 212 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:39,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:36:39,608 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2021-11-09 08:36:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-09 08:36:39,609 INFO L78 Accepts]: Start accepts. Automaton has has 212 states, 211 states have (on average 2.5023696682464456) internal successors, (528), 212 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-09 08:36:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:36:39,610 INFO L225 Difference]: With dead ends: 273 [2021-11-09 08:36:39,610 INFO L226 Difference]: Without dead ends: 272 [2021-11-09 08:36:39,616 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20301 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=13084, Invalid=56348, Unknown=0, NotChecked=0, Total=69432 [2021-11-09 08:36:39,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-09 08:36:39,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2021-11-09 08:36:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.0037037037037038) internal successors, (271), 270 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2021-11-09 08:36:39,623 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 265 [2021-11-09 08:36:39,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:36:39,624 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2021-11-09 08:36:39,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 212 states, 211 states have (on average 2.5023696682464456) internal successors, (528), 212 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2021-11-09 08:36:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-09 08:36:39,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:36:39,626 INFO L513 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 1, 1, 1, 1] [2021-11-09 08:36:39,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-09 08:36:39,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-09 08:36:39,843 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:36:39,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:36:39,843 INFO L85 PathProgramCache]: Analyzing trace with hash 822344049, now seen corresponding path program 53 times [2021-11-09 08:36:39,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:36:39,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927470885] [2021-11-09 08:36:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:36:39,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:36:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:36:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:36:43,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:36:43,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927470885] [2021-11-09 08:36:43,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927470885] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:36:43,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370063291] [2021-11-09 08:36:43,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:36:43,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:36:43,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:36:43,513 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:36:43,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-09 08:36:47,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-09 08:36:47,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:36:47,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 162 conjunts are in the unsatisfiable core [2021-11-09 08:36:47,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:36:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:36:56,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370063291] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:36:56,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:36:56,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 215 [2021-11-09 08:36:56,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423287749] [2021-11-09 08:36:56,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2021-11-09 08:36:56,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:36:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2021-11-09 08:36:56,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6364, Invalid=40076, Unknown=0, NotChecked=0, Total=46440 [2021-11-09 08:36:56,921 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand has 216 states, 215 states have (on average 2.5023255813953487) internal successors, (538), 216 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:59,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:36:59,568 INFO L93 Difference]: Finished difference Result 278 states and 278 transitions. [2021-11-09 08:36:59,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-09 08:36:59,568 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 215 states have (on average 2.5023255813953487) internal successors, (538), 216 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2021-11-09 08:36:59,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:36:59,570 INFO L225 Difference]: With dead ends: 278 [2021-11-09 08:36:59,570 INFO L226 Difference]: Without dead ends: 277 [2021-11-09 08:36:59,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21089 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=13574, Invalid=58518, Unknown=0, NotChecked=0, Total=72092 [2021-11-09 08:36:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-09 08:36:59,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 276. [2021-11-09 08:36:59,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.0036363636363637) internal successors, (276), 275 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2021-11-09 08:36:59,581 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 270 [2021-11-09 08:36:59,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:36:59,581 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2021-11-09 08:36:59,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 215 states have (on average 2.5023255813953487) internal successors, (538), 216 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:36:59,582 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2021-11-09 08:36:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-09 08:36:59,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:36:59,584 INFO L513 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 1, 1, 1, 1] [2021-11-09 08:36:59,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-11-09 08:36:59,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:36:59,811 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:36:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:36:59,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1556328411, now seen corresponding path program 54 times [2021-11-09 08:36:59,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:36:59,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399556727] [2021-11-09 08:36:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:36:59,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:36:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:37:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:37:03,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:37:03,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399556727] [2021-11-09 08:37:03,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399556727] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:37:03,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760735333] [2021-11-09 08:37:03,587 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:37:03,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:37:03,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:37:03,588 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:37:03,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-09 08:37:08,417 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-09 08:37:08,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:37:08,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 165 conjunts are in the unsatisfiable core [2021-11-09 08:37:08,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:37:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:37:17,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760735333] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:37:17,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:37:17,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 219 [2021-11-09 08:37:17,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948778131] [2021-11-09 08:37:17,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 220 states [2021-11-09 08:37:17,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:37:17,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2021-11-09 08:37:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6592, Invalid=41588, Unknown=0, NotChecked=0, Total=48180 [2021-11-09 08:37:17,672 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand has 220 states, 219 states have (on average 2.502283105022831) internal successors, (548), 220 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:37:20,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:37:20,670 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2021-11-09 08:37:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-11-09 08:37:20,670 INFO L78 Accepts]: Start accepts. Automaton has has 220 states, 219 states have (on average 2.502283105022831) internal successors, (548), 220 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 275 [2021-11-09 08:37:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:37:20,671 INFO L225 Difference]: With dead ends: 283 [2021-11-09 08:37:20,671 INFO L226 Difference]: Without dead ends: 282 [2021-11-09 08:37:20,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21892 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=14073, Invalid=60729, Unknown=0, NotChecked=0, Total=74802 [2021-11-09 08:37:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-09 08:37:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2021-11-09 08:37:20,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.0035714285714286) internal successors, (281), 280 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:37:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2021-11-09 08:37:20,679 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 275 [2021-11-09 08:37:20,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:37:20,679 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2021-11-09 08:37:20,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 220 states, 219 states have (on average 2.502283105022831) internal successors, (548), 220 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:37:20,680 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2021-11-09 08:37:20,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-09 08:37:20,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:37:20,681 INFO L513 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 55, 1, 1, 1, 1] [2021-11-09 08:37:20,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-11-09 08:37:20,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-09 08:37:20,882 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:37:20,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:37:20,882 INFO L85 PathProgramCache]: Analyzing trace with hash -940439055, now seen corresponding path program 55 times [2021-11-09 08:37:20,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:37:20,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130849859] [2021-11-09 08:37:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:37:20,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:37:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:37:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:37:24,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:37:24,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130849859] [2021-11-09 08:37:24,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130849859] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:37:24,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382965749] [2021-11-09 08:37:24,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:37:24,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:37:24,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:37:24,726 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:37:24,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-09 08:37:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:37:29,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 168 conjunts are in the unsatisfiable core [2021-11-09 08:37:29,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:37:39,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:37:39,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382965749] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:37:39,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:37:39,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 223 [2021-11-09 08:37:39,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686838218] [2021-11-09 08:37:39,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 224 states [2021-11-09 08:37:39,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:37:39,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2021-11-09 08:37:39,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6824, Invalid=43128, Unknown=0, NotChecked=0, Total=49952 [2021-11-09 08:37:39,008 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand has 224 states, 223 states have (on average 2.502242152466368) internal successors, (558), 224 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:37:42,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:37:42,034 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2021-11-09 08:37:42,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-11-09 08:37:42,034 INFO L78 Accepts]: Start accepts. Automaton has has 224 states, 223 states have (on average 2.502242152466368) internal successors, (558), 224 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2021-11-09 08:37:42,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:37:42,035 INFO L225 Difference]: With dead ends: 288 [2021-11-09 08:37:42,035 INFO L226 Difference]: Without dead ends: 287 [2021-11-09 08:37:42,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22710 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=14581, Invalid=62981, Unknown=0, NotChecked=0, Total=77562 [2021-11-09 08:37:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-09 08:37:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2021-11-09 08:37:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.0035087719298246) internal successors, (286), 285 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:37:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2021-11-09 08:37:42,046 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 280 [2021-11-09 08:37:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:37:42,047 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2021-11-09 08:37:42,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 224 states, 223 states have (on average 2.502242152466368) internal successors, (558), 224 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:37:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2021-11-09 08:37:42,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-09 08:37:42,049 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:37:42,049 INFO L513 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 1, 1, 1, 1] [2021-11-09 08:37:42,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-09 08:37:42,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-11-09 08:37:42,256 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:37:42,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:37:42,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1493471141, now seen corresponding path program 56 times [2021-11-09 08:37:42,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:37:42,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114958646] [2021-11-09 08:37:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:37:42,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:37:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:37:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:37:46,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:37:46,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114958646] [2021-11-09 08:37:46,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114958646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:37:46,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209715260] [2021-11-09 08:37:46,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:37:46,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:37:46,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:37:46,365 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:37:46,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-09 08:37:51,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:37:51,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:37:51,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 171 conjunts are in the unsatisfiable core [2021-11-09 08:37:51,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:38:01,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209715260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:01,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:38:01,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 227 [2021-11-09 08:38:01,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104305967] [2021-11-09 08:38:01,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 228 states [2021-11-09 08:38:01,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:01,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2021-11-09 08:38:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7060, Invalid=44696, Unknown=0, NotChecked=0, Total=51756 [2021-11-09 08:38:01,143 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand has 228 states, 227 states have (on average 2.502202643171806) internal successors, (568), 228 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:04,188 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2021-11-09 08:38:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-11-09 08:38:04,189 INFO L78 Accepts]: Start accepts. Automaton has has 228 states, 227 states have (on average 2.502202643171806) internal successors, (568), 228 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2021-11-09 08:38:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:04,190 INFO L225 Difference]: With dead ends: 293 [2021-11-09 08:38:04,190 INFO L226 Difference]: Without dead ends: 292 [2021-11-09 08:38:04,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23543 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=15098, Invalid=65274, Unknown=0, NotChecked=0, Total=80372 [2021-11-09 08:38:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-09 08:38:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2021-11-09 08:38:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.0034482758620689) internal successors, (291), 290 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2021-11-09 08:38:04,205 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 285 [2021-11-09 08:38:04,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:04,205 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2021-11-09 08:38:04,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 228 states, 227 states have (on average 2.502202643171806) internal successors, (568), 228 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:04,206 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2021-11-09 08:38:04,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-09 08:38:04,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:04,208 INFO L513 BasicCegarLoop]: trace histogram [58, 57, 57, 57, 57, 1, 1, 1, 1] [2021-11-09 08:38:04,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:04,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:04,425 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:38:04,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:04,425 INFO L85 PathProgramCache]: Analyzing trace with hash -890930575, now seen corresponding path program 57 times [2021-11-09 08:38:04,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:04,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661097237] [2021-11-09 08:38:04,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:04,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:38:08,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:08,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661097237] [2021-11-09 08:38:08,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661097237] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:08,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853616035] [2021-11-09 08:38:08,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:38:08,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:08,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:08,542 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:08,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-09 08:38:14,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-09 08:38:14,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:38:14,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 174 conjunts are in the unsatisfiable core [2021-11-09 08:38:14,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:38:24,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853616035] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:24,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:38:24,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 231 [2021-11-09 08:38:24,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459655275] [2021-11-09 08:38:24,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 232 states [2021-11-09 08:38:24,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:24,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2021-11-09 08:38:24,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7300, Invalid=46292, Unknown=0, NotChecked=0, Total=53592 [2021-11-09 08:38:24,843 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand has 232 states, 231 states have (on average 2.502164502164502) internal successors, (578), 232 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:28,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:28,107 INFO L93 Difference]: Finished difference Result 298 states and 298 transitions. [2021-11-09 08:38:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-09 08:38:28,108 INFO L78 Accepts]: Start accepts. Automaton has has 232 states, 231 states have (on average 2.502164502164502) internal successors, (578), 232 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2021-11-09 08:38:28,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:28,109 INFO L225 Difference]: With dead ends: 298 [2021-11-09 08:38:28,109 INFO L226 Difference]: Without dead ends: 297 [2021-11-09 08:38:28,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24391 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=15624, Invalid=67608, Unknown=0, NotChecked=0, Total=83232 [2021-11-09 08:38:28,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-09 08:38:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296. [2021-11-09 08:38:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.0033898305084745) internal successors, (296), 295 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 296 transitions. [2021-11-09 08:38:28,123 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 296 transitions. Word has length 290 [2021-11-09 08:38:28,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:28,124 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 296 transitions. [2021-11-09 08:38:28,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 232 states, 231 states have (on average 2.502164502164502) internal successors, (578), 232 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 296 transitions. [2021-11-09 08:38:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-11-09 08:38:28,126 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:28,126 INFO L513 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 1, 1, 1, 1] [2021-11-09 08:38:28,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:28,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:28,343 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:38:28,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash 790851365, now seen corresponding path program 58 times [2021-11-09 08:38:28,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:28,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309262858] [2021-11-09 08:38:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:28,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:38:32,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:32,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309262858] [2021-11-09 08:38:32,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309262858] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:32,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301277585] [2021-11-09 08:38:32,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:38:32,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:32,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:32,646 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:32,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-09 08:38:37,908 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:38:37,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:38:37,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 177 conjunts are in the unsatisfiable core [2021-11-09 08:38:37,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:38:48,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301277585] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:48,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:38:48,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 235 [2021-11-09 08:38:48,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850593365] [2021-11-09 08:38:48,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 236 states [2021-11-09 08:38:48,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:48,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2021-11-09 08:38:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7544, Invalid=47916, Unknown=0, NotChecked=0, Total=55460 [2021-11-09 08:38:48,429 INFO L87 Difference]: Start difference. First operand 296 states and 296 transitions. Second operand has 236 states, 235 states have (on average 2.502127659574468) internal successors, (588), 236 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:51,672 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2021-11-09 08:38:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-11-09 08:38:51,673 INFO L78 Accepts]: Start accepts. Automaton has has 236 states, 235 states have (on average 2.502127659574468) internal successors, (588), 236 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2021-11-09 08:38:51,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:51,674 INFO L225 Difference]: With dead ends: 303 [2021-11-09 08:38:51,674 INFO L226 Difference]: Without dead ends: 302 [2021-11-09 08:38:51,678 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25254 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=16159, Invalid=69983, Unknown=0, NotChecked=0, Total=86142 [2021-11-09 08:38:51,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-09 08:38:51,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 301. [2021-11-09 08:38:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.0033333333333334) internal successors, (301), 300 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2021-11-09 08:38:51,683 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 295 [2021-11-09 08:38:51,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:51,683 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2021-11-09 08:38:51,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 236 states, 235 states have (on average 2.502127659574468) internal successors, (588), 236 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2021-11-09 08:38:51,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-09 08:38:51,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:51,685 INFO L513 BasicCegarLoop]: trace histogram [60, 59, 59, 59, 59, 1, 1, 1, 1] [2021-11-09 08:38:51,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:51,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-11-09 08:38:51,886 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:38:51,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2057718513, now seen corresponding path program 59 times [2021-11-09 08:38:51,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:51,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802780573] [2021-11-09 08:38:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:51,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8673 backedges. 0 proven. 8673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:38:56,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:56,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802780573] [2021-11-09 08:38:56,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802780573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:56,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873941820] [2021-11-09 08:38:56,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:38:56,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:56,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:56,254 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:56,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-09 08:39:01,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-11-09 08:39:01,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:01,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 180 conjunts are in the unsatisfiable core [2021-11-09 08:39:01,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8673 backedges. 0 proven. 8673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:39:12,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873941820] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:12,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:39:12,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 239 [2021-11-09 08:39:12,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208736095] [2021-11-09 08:39:12,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 240 states [2021-11-09 08:39:12,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:12,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2021-11-09 08:39:12,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7792, Invalid=49568, Unknown=0, NotChecked=0, Total=57360 [2021-11-09 08:39:12,532 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand has 240 states, 239 states have (on average 2.502092050209205) internal successors, (598), 240 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:39:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:15,861 INFO L93 Difference]: Finished difference Result 308 states and 308 transitions. [2021-11-09 08:39:15,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-11-09 08:39:15,861 INFO L78 Accepts]: Start accepts. Automaton has has 240 states, 239 states have (on average 2.502092050209205) internal successors, (598), 240 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2021-11-09 08:39:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:15,863 INFO L225 Difference]: With dead ends: 308 [2021-11-09 08:39:15,863 INFO L226 Difference]: Without dead ends: 307 [2021-11-09 08:39:15,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26132 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=16703, Invalid=72399, Unknown=0, NotChecked=0, Total=89102 [2021-11-09 08:39:15,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-09 08:39:15,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2021-11-09 08:39:15,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.0032786885245901) internal successors, (306), 305 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:39:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2021-11-09 08:39:15,910 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 300 [2021-11-09 08:39:15,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:15,911 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2021-11-09 08:39:15,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 240 states, 239 states have (on average 2.502092050209205) internal successors, (598), 240 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:39:15,911 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2021-11-09 08:39:15,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-09 08:39:15,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:15,913 INFO L513 BasicCegarLoop]: trace histogram [61, 60, 60, 60, 60, 1, 1, 1, 1] [2021-11-09 08:39:15,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:16,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-11-09 08:39:16,127 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:39:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash 567340709, now seen corresponding path program 60 times [2021-11-09 08:39:16,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:16,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774518772] [2021-11-09 08:39:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:16,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:39:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:39:20,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:20,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774518772] [2021-11-09 08:39:20,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774518772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:20,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783364419] [2021-11-09 08:39:20,620 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:39:20,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:20,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:20,621 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:20,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-09 08:39:26,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-11-09 08:39:26,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:26,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 183 conjunts are in the unsatisfiable core [2021-11-09 08:39:26,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:39:37,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783364419] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:37,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:39:37,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 243 [2021-11-09 08:39:37,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740693342] [2021-11-09 08:39:37,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 244 states [2021-11-09 08:39:37,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:37,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2021-11-09 08:39:37,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8044, Invalid=51248, Unknown=0, NotChecked=0, Total=59292 [2021-11-09 08:39:37,572 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand has 244 states, 243 states have (on average 2.5020576131687244) internal successors, (608), 244 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:39:40,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:40,893 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2021-11-09 08:39:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-11-09 08:39:40,894 INFO L78 Accepts]: Start accepts. Automaton has has 244 states, 243 states have (on average 2.5020576131687244) internal successors, (608), 244 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2021-11-09 08:39:40,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:40,895 INFO L225 Difference]: With dead ends: 313 [2021-11-09 08:39:40,895 INFO L226 Difference]: Without dead ends: 312 [2021-11-09 08:39:40,899 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27025 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=17256, Invalid=74856, Unknown=0, NotChecked=0, Total=92112 [2021-11-09 08:39:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-09 08:39:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 311. [2021-11-09 08:39:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.0032258064516129) internal successors, (311), 310 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:39:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2021-11-09 08:39:40,906 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 305 [2021-11-09 08:39:40,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:40,907 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2021-11-09 08:39:40,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 244 states, 243 states have (on average 2.5020576131687244) internal successors, (608), 244 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:39:40,907 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2021-11-09 08:39:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-09 08:39:40,909 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:40,909 INFO L513 BasicCegarLoop]: trace histogram [62, 61, 61, 61, 61, 1, 1, 1, 1] [2021-11-09 08:39:40,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-11-09 08:39:41,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:41,131 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:39:41,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1107526799, now seen corresponding path program 61 times [2021-11-09 08:39:41,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:41,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007381944] [2021-11-09 08:39:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:41,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:39:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9272 backedges. 0 proven. 9272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:39:45,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:45,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007381944] [2021-11-09 08:39:45,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007381944] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:45,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791276991] [2021-11-09 08:39:45,787 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:39:45,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:45,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:45,788 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:45,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-09 08:39:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:39:51,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 186 conjunts are in the unsatisfiable core [2021-11-09 08:39:51,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9272 backedges. 0 proven. 9272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:02,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791276991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:40:02,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:40:02,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 247 [2021-11-09 08:40:02,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668126961] [2021-11-09 08:40:02,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 248 states [2021-11-09 08:40:02,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:40:02,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2021-11-09 08:40:02,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8300, Invalid=52956, Unknown=0, NotChecked=0, Total=61256 [2021-11-09 08:40:02,750 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand has 248 states, 247 states have (on average 2.5020242914979756) internal successors, (618), 248 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:40:06,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:06,133 INFO L93 Difference]: Finished difference Result 318 states and 318 transitions. [2021-11-09 08:40:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-09 08:40:06,134 INFO L78 Accepts]: Start accepts. Automaton has has 248 states, 247 states have (on average 2.5020242914979756) internal successors, (618), 248 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2021-11-09 08:40:06,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:06,135 INFO L225 Difference]: With dead ends: 318 [2021-11-09 08:40:06,135 INFO L226 Difference]: Without dead ends: 317 [2021-11-09 08:40:06,139 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27933 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=17818, Invalid=77354, Unknown=0, NotChecked=0, Total=95172 [2021-11-09 08:40:06,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-09 08:40:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 316. [2021-11-09 08:40:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.0031746031746032) internal successors, (316), 315 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:40:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2021-11-09 08:40:06,144 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 310 [2021-11-09 08:40:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:06,144 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2021-11-09 08:40:06,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 248 states, 247 states have (on average 2.5020242914979756) internal successors, (618), 248 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:40:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2021-11-09 08:40:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-09 08:40:06,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:06,146 INFO L513 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 1, 1, 1, 1] [2021-11-09 08:40:06,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-11-09 08:40:06,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:40:06,347 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:40:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1195707941, now seen corresponding path program 62 times [2021-11-09 08:40:06,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:40:06,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163712566] [2021-11-09 08:40:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:06,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:40:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:11,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:40:11,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163712566] [2021-11-09 08:40:11,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163712566] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:40:11,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083199774] [2021-11-09 08:40:11,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:40:11,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:40:11,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:40:11,180 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:40:11,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-09 08:40:17,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:40:17,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:40:17,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 189 conjunts are in the unsatisfiable core [2021-11-09 08:40:17,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:28,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083199774] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:40:28,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:40:28,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 251 [2021-11-09 08:40:28,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606638418] [2021-11-09 08:40:28,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 252 states [2021-11-09 08:40:28,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:40:28,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2021-11-09 08:40:28,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8560, Invalid=54692, Unknown=0, NotChecked=0, Total=63252 [2021-11-09 08:40:28,731 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand has 252 states, 251 states have (on average 2.50199203187251) internal successors, (628), 252 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:40:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:32,226 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2021-11-09 08:40:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-09 08:40:32,227 INFO L78 Accepts]: Start accepts. Automaton has has 252 states, 251 states have (on average 2.50199203187251) internal successors, (628), 252 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 315 [2021-11-09 08:40:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:32,228 INFO L225 Difference]: With dead ends: 323 [2021-11-09 08:40:32,228 INFO L226 Difference]: Without dead ends: 322 [2021-11-09 08:40:32,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28856 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=18389, Invalid=79893, Unknown=0, NotChecked=0, Total=98282 [2021-11-09 08:40:32,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-09 08:40:32,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2021-11-09 08:40:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.003125) internal successors, (321), 320 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:40:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2021-11-09 08:40:32,237 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 315 [2021-11-09 08:40:32,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:32,237 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2021-11-09 08:40:32,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 252 states, 251 states have (on average 2.50199203187251) internal successors, (628), 252 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:40:32,238 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2021-11-09 08:40:32,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-09 08:40:32,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:32,239 INFO L513 BasicCegarLoop]: trace histogram [64, 63, 63, 63, 63, 1, 1, 1, 1] [2021-11-09 08:40:32,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-11-09 08:40:32,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:40:32,455 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 08:40:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:32,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1582298127, now seen corresponding path program 63 times [2021-11-09 08:40:32,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:40:32,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922109991] [2021-11-09 08:40:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:32,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:40:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9891 backedges. 0 proven. 9891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:37,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:40:37,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922109991] [2021-11-09 08:40:37,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922109991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:40:37,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112653501] [2021-11-09 08:40:37,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:40:37,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:40:37,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:40:37,449 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:40:37,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942e67c-526b-4295-adac-fbc062fb1a12/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-09 08:40:44,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-11-09 08:40:44,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:40:44,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-09 08:40:44,451 INFO L286 TraceCheckSpWp]: Computing forward predicates...